Company lists · Data refreshed September 2026
Top 25 IT infrastructure and security companies based in Markham, Canada
RevenueBase identified 47 company matches for IT infrastructure and security companies associated with Markham, Canada as of September 2026 and tracks 1,667 professional contacts across them, including 568 with verified work emails. Across Canada, Toronto is the largest hub for this category (362 companies); Markham has 47.
This list covers company matches for IT infrastructure and security companies associated with Markham, Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest IT infrastructure and security companies based in Markham, Canada
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 876 contacts → | ||||
Exact match “NTG CLARITY is a leader in delivering network, telecom, IT and infrastructure solutions to network service providers and medium and large enterprises.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 2 | 192 contacts → | ||||
Exact match “Founded in 1995, Pathway Communications specializes in providing innovative and cost-effective IT and communication solutions for businesses of all sizes.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 3 | 158 contacts → | ||||
Exact match “Activo is a national IP Infrastructure Company that recognizes today’s businesses depend on secure and scalable IP networks for growth and success.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 4 | 138 contacts → | ||||
Exact match “Celebrating more than 35 years of excellence, CaTECH Systems Ltd.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 5 | 31 contacts → | ||||
Exact match “PACE Technical has joined IT Solutions to create a more robust enterprise managed services experience, focusing on the ideals that matter most to a successful business union…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 6 | 29 contacts → | ||||
Exact match “Indusflow Systems is a security-focused managed IT services provider committed to supporting, securing and modernizing your organization’s information technology ecosystem.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 7 | 24 contacts → | ||||
Exact match “Lyrical Security is an anti-cookie-cutter, full-service cybersecurity services firm.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 8 | 18 contacts → | ||||
Exact match “Cover-All Managed Cloud and IT Services is a Managed Services Provider (MSP) delivering cost effective solutions for Managed Cloud, Managed Mainframe, Managed IT, Cyber Security…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 9 | 16 contacts → | ||||
Exact match “As Data Centre Specialists, we help our customers optimize, protect, and future-proof their digital assets.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 10 | 15 contacts → | ||||
Exact match “Your business deserves IT solutions that match your ambition.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “NPC DataGuard delivers secure managed computing for professionals and growing SMEs.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 12 | 10 contacts → | ||||
Exact match “Rational Business Solutions has been a trusted IT partner for small and medium-sized businesses since 1996.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “With over 15 years of experience providing IT services in the GTA, Insix is a leader in providing companies with cost effective solutions to help automate, streamline and improve…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 15 | 6 contacts → | ||||
Exact match “Integra Data Systems Corp.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 16 | 6 contacts → | ||||
Exact match “When it comes to data security, it’s not a matter of whether a breach will occur – it’s a matter of when.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 17 | 5 contacts → | ||||
Exact match “Dynamix Solutions - Acquired by F12.net Dynamix Solutions is a leading managed IT outsourcing service provider.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 18 | 5 contacts → | ||||
Exact match “At TeraLinks Consulting, we specialize in delivering end-to-end IT solutions that keep your business connected, secure, and running smoothly.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “Professional services and consulting organization with senior engineers and consultants, helping clients and partners with their deliverables and projects.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “Spica Systems Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “Data First Solutions is the one of the longest standing IT Providers in Canada.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “For 20 years, DigitalNet Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “Munimentum provides management for all aspects of IT infrastructure and services for small and medium sized businesses and non-profit organizations.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 24 | 3 contacts → | ||||
Exact match “Business software & network consulting firm” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 25 | 3 contacts → | ||||
Exact match “Aurora Communication Technologies is a Canadian manufacturer of True End-To-End Solution for Security and IT infrastructure Systems.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “IT infrastructure and security companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 47 IT infrastructure and security companies based in Markham, Canada
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IT infrastructure and security companies based in Markham, Canada at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured across the whole Canada list rather than for Markham, so it is reported there. Company counts and contact totals on this page are exact for Markham, over 47 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Markham, Canada whose business descriptions match “IT infrastructure and security companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 568 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
IT infrastructure and security companies by metro in Canada
- IT infrastructure and security companies in Toronto362
- IT infrastructure and security companies in Calgary181
- IT infrastructure and security companies in Montreal154
- IT infrastructure and security companies in Ottawa115
- IT infrastructure and security companies in Mississauga111
- IT infrastructure and security companies in Vancouver103
- IT infrastructure and security companies in Edmonton70
- IT infrastructure and security companies in Winnipeg37
- IT infrastructure and security companies in Brampton34
- IT infrastructure and security companies in London29
- IT infrastructure and security companies in Burnaby26
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT infrastructure and security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many IT infrastructure and security companies are there based in Markham, Canada?
RevenueBase identified 47 company matches for IT infrastructure and security companies associated with Markham, Canada as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
NTG Clarity tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in Canada has the most IT infrastructure and security companies?
Toronto leads Canada with 362 company records, followed by Calgary (181) and Montreal (154). Markham has 47.
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 568 professional contacts with verified work emails tracked across these 47 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 47 IT infrastructure and security companies based in Markham, Canada. Start with a free account, no credit card.
Download this list →Related lists
IT infrastructure and security companies by geography
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- IT infrastructure and security companies based in Brazil
- IT infrastructure and security companies based in the United Kingdom
- IT infrastructure and security companies based in Germany
- IT infrastructure and security companies based in Canada
- IT infrastructure and security companies based in France
- IT infrastructure and security companies based in Australia
- IT infrastructure and security companies based in Italy
- IT infrastructure and security companies based in Spain
- IT infrastructure and security companies based in the Netherlands
- IT infrastructure and security companies based in South Africa
- IT infrastructure and security companies based in Mexico
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- IT infrastructure and security companies based in the United States
- IT infrastructure and security companies based in Brazil
- IT infrastructure and security companies based in the United Kingdom
- IT infrastructure and security companies based in Germany
- IT infrastructure and security companies based in Canada
- IT infrastructure and security companies based in France
Company intelligence · public preview
Top 25 IT infrastructure and security companies based in Markham, Canada
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 47 matching company records for IT infrastructure and security companies based in Markham, Canada, with 1,667 tracked contacts and 568 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 27, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 IT infrastructure and security companies based in Markham, Canada
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  NTG Clarityntgclarity.comHQ: Markham, ON, CanadaReported employees: 501-1,000 | Markham, ON, Canada | 501-1,000 | Exact match | 876 contacts → |
“NTG CLARITY is a leader in delivering network, telecom, IT and infrastructure solutions to network service providers and medium and large enterprises.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Pathway Communicationspathcom.comHQ: Markham, ON, CanadaReported employees: 51-200 | Markham, ON, Canada | 51-200 | Exact match | 192 contacts → |
“Founded in 1995, Pathway Communications specializes in providing innovative and cost-effective IT and communication solutions for businesses of all sizes.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Activo INCactivo.caHQ: Markham, ON, CanadaReported employees: 51-200 | Markham, ON, Canada | 51-200 | Exact match | 158 contacts → |
“Activo is a national IP Infrastructure Company that recognizes today’s businesses depend on secure and scalable IP networks for growth and success.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Catech Systems LTDcatech-systems.comHQ: Markham, ON, CanadaReported employees: 201-500 | Markham, ON, Canada | 201-500 | Exact match | 138 contacts → |
“Celebrating more than 35 years of excellence, CaTECH Systems Ltd.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Pace Technical, An IT Solutions Companypacetechnical.comHQ: Markham, ON, CanadaReported employees: 51-200 | Markham, ON, Canada | 51-200 | Exact match | 31 contacts → |
“PACE Technical has joined IT Solutions to create a more robust enterprise managed services experience, focusing on the ideals that matter most to a successful business union…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Indusflow Systemsindusflow.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 29 contacts → |
“Indusflow Systems is a security-focused managed IT services provider committed to supporting, securing and modernizing your organization’s information technology ecosystem.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Lyrical Securitylyricalsecurity.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 24 contacts → |
“Lyrical Security is an anti-cookie-cutter, full-service cybersecurity services firm.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Coverall Managed Cloud And IT Servicescoverallmcits.caHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 18 contacts → |
“Cover-All Managed Cloud and IT Services is a Managed Services Provider (MSP) delivering cost effective solutions for Managed Cloud, Managed Mainframe, Managed IT, Cyber Security…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Biac Broadbandbiacbroadband.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 16 contacts → |
“As Data Centre Specialists, we help our customers optimize, protect, and future-proof their digital assets.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Roca Networks INCrocanetworks.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 15 contacts → |
“Your business deserves IT solutions that match your ambition.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | NPC Dataguardnpcdataguard.com HQ: Markham, CanadaReported employees: 11-50 | Markham, Canada | 11-50 | Exact match | 14 contacts → |
“NPC DataGuard delivers secure managed computing for professionals and growing SMEs.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Rational Business Solutionsrationalsolutions.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 10 contacts → |
“Rational Business Solutions has been a trusted IT partner for small and medium-sized businesses since 1996.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Insix INCinsix.comHQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 8 contacts → |
“With over 15 years of experience providing IT services in the GTA, Insix is a leader in providing companies with cost effective solutions to help automate, streamline and improve…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  IT Works COitworksco.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 |  Integra Data Systemsinsaintegra.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 6 contacts → |
“Integra Data Systems Corp.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Source 44 Securitysource44.netHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 6 contacts → |
“When it comes to data security, it’s not a matter of whether a breach will occur – it’s a matter of when.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Dynamix Solutions INCdynamixsolutions.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 5 contacts → |
“Dynamix Solutions - Acquired by F12.net Dynamix Solutions is a leading managed IT outsourcing service provider.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Teralinks Consulting INCteralinksconsulting.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 5 contacts → |
“At TeraLinks Consulting, we specialize in delivering end-to-end IT solutions that keep your business connected, secure, and running smoothly.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Venga Consultingvengaconsulting.comHQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 5 contacts → |
“Professional services and consulting organization with senior engineers and consultants, helping clients and partners with their deliverables and projects.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Spica Systemsspicasys.comHQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 5 contacts → |
“Spica Systems Inc.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Data First Solutionsdfcanada.com HQ: Markham, ON, CanadaReported employees: 51-200 | Markham, ON, Canada | 51-200 | Exact match | 4 contacts → |
“Data First Solutions is the one of the longest standing IT Providers in Canada.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Digitalnet INCdigitalnet.caHQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 4 contacts → |
“For 20 years, DigitalNet Inc.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Munimentum INCmunimentum.caHQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 3 contacts → |
“Munimentum provides management for all aspects of IT infrastructure and services for small and medium sized businesses and non-profit organizations.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Trio NET Solutions INCtnscanada.com HQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 3 contacts → |
“Business software & network consulting firm” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Aurora Communication Technologies Corpauroratec.ca HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 3 contacts → |
“Aurora Communication Technologies is a Canadian manufacturer of True End-To-End Solution for Security and IT infrastructure Systems.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 47 company matches
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IT infrastructure and security companies: dataset insights
September 27, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
45 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Canada list rather than for Markham, so it is reported there. Company counts and contact totals on this page are exact for Markham, over 47 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 27, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
IT infrastructure and security companies by metro in Canada
- IT infrastructure and security companies in Toronto362
- IT infrastructure and security companies in Calgary181
- IT infrastructure and security companies in Montreal154
- IT infrastructure and security companies in Ottawa115
- IT infrastructure and security companies in Mississauga111
- IT infrastructure and security companies in Vancouver103
- IT infrastructure and security companies in Edmonton70
- IT infrastructure and security companies in Winnipeg37
- IT infrastructure and security companies in Brampton34
- IT infrastructure and security companies in London29
- IT infrastructure and security companies in Burnaby26
Questions about this company list
What does Exact match mean for IT infrastructure and security companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many IT infrastructure and security companies did RevenueBase find based in Markham, Canada?
The saved snapshot records 47 matching company records, 1,667 tracked contacts and 568 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 27, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
IT infrastructure and security companies by geography
- IT infrastructure and security companies based in the United States
- IT infrastructure and security companies based in Brazil
- IT infrastructure and security companies based in the United Kingdom
- IT infrastructure and security companies based in Germany
- IT infrastructure and security companies based in Canada
- IT infrastructure and security companies based in France
- IT infrastructure and security companies based in Australia
- IT infrastructure and security companies based in Italy
- IT infrastructure and security companies based in Spain
- IT infrastructure and security companies based in the Netherlands
- IT infrastructure and security companies based in South Africa
- IT infrastructure and security companies based in Mexico
Cite this list
RevenueBase Data Team. Top 25 IT infrastructure and security companies based in Markham, Canada. Snapshot: September 27, 2026. https://revenuebase.ai/companies/it-infrastructure-and-security-companies/canada/markham.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- IT infrastructure and security companies based in the United States
- IT infrastructure and security companies based in Brazil
- IT infrastructure and security companies based in the United Kingdom
- IT infrastructure and security companies based in Germany
- IT infrastructure and security companies based in Canada
- IT infrastructure and security companies based in France
Company intelligence · public preview
Top 25 IT infrastructure and security companies based in Markham, Canada
RevenueBase records 47 matching company records for IT infrastructure and security companies based in Markham, Canada, with 1,667 tracked contacts and 568 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 27, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 IT infrastructure and security companies based in Markham, Canada
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | NTG Clarityntgclarity.com HQ: Markham, ON, CanadaReported employees: 501-1,000 | Markham, ON, Canada | 501-1,000 | Exact match | 876 contacts → |
“NTG CLARITY is a leader in delivering network, telecom, IT and infrastructure solutions to network service providers and medium and large enterprises.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Pathway Communicationspathcom.com HQ: Markham, ON, CanadaReported employees: 51-200 | Markham, ON, Canada | 51-200 | Exact match | 192 contacts → |
“Founded in 1995, Pathway Communications specializes in providing innovative and cost-effective IT and communication solutions for businesses of all sizes.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Activo INCactivo.ca HQ: Markham, ON, CanadaReported employees: 51-200 | Markham, ON, Canada | 51-200 | Exact match | 158 contacts → |
“Activo is a national IP Infrastructure Company that recognizes today’s businesses depend on secure and scalable IP networks for growth and success.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Catech Systems LTDcatech-systems.com HQ: Markham, ON, CanadaReported employees: 201-500 | Markham, ON, Canada | 201-500 | Exact match | 138 contacts → |
“Celebrating more than 35 years of excellence, CaTECH Systems Ltd.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Pace Technical, An IT Solutions Companypacetechnical.com HQ: Markham, ON, CanadaReported employees: 51-200 | Markham, ON, Canada | 51-200 | Exact match | 31 contacts → |
“PACE Technical has joined IT Solutions to create a more robust enterprise managed services experience, focusing on the ideals that matter most to a successful business union…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Indusflow Systemsindusflow.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 29 contacts → |
“Indusflow Systems is a security-focused managed IT services provider committed to supporting, securing and modernizing your organization’s information technology ecosystem.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Lyrical Securitylyricalsecurity.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 24 contacts → |
“Lyrical Security is an anti-cookie-cutter, full-service cybersecurity services firm.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Coverall Managed Cloud And IT Servicescoverallmcits.ca HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 18 contacts → |
“Cover-All Managed Cloud and IT Services is a Managed Services Provider (MSP) delivering cost effective solutions for Managed Cloud, Managed Mainframe, Managed IT, Cyber Security…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Biac Broadbandbiacbroadband.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 16 contacts → |
“As Data Centre Specialists, we help our customers optimize, protect, and future-proof their digital assets.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Roca Networks INCrocanetworks.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 15 contacts → |
“Your business deserves IT solutions that match your ambition.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | NPC Dataguardnpcdataguard.com HQ: Markham, CanadaReported employees: 11-50 | Markham, Canada | 11-50 | Exact match | 14 contacts → |
“NPC DataGuard delivers secure managed computing for professionals and growing SMEs.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Rational Business Solutionsrationalsolutions.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 10 contacts → |
“Rational Business Solutions has been a trusted IT partner for small and medium-sized businesses since 1996.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Insix INCinsix.com HQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 8 contacts → |
“With over 15 years of experience providing IT services in the GTA, Insix is a leader in providing companies with cost effective solutions to help automate, streamline and improve…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | IT Works COitworksco.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Integra Data Systemsinsaintegra.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 6 contacts → |
“Integra Data Systems Corp.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Source 44 Securitysource44.net HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 6 contacts → |
“When it comes to data security, it’s not a matter of whether a breach will occur – it’s a matter of when.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Dynamix Solutions INCdynamixsolutions.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 5 contacts → |
“Dynamix Solutions - Acquired by F12.net Dynamix Solutions is a leading managed IT outsourcing service provider.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Teralinks Consulting INCteralinksconsulting.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 5 contacts → |
“At TeraLinks Consulting, we specialize in delivering end-to-end IT solutions that keep your business connected, secure, and running smoothly.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Venga Consultingvengaconsulting.com HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 5 contacts → |
“Professional services and consulting organization with senior engineers and consultants, helping clients and partners with their deliverables and projects.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Spica Systemsspicasys.com HQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 5 contacts → |
“Spica Systems Inc.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Data First Solutionsdfcanada.com HQ: Markham, ON, CanadaReported employees: 51-200 | Markham, ON, Canada | 51-200 | Exact match | 4 contacts → |
“Data First Solutions is the one of the longest standing IT Providers in Canada.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Digitalnet INCdigitalnet.ca HQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 4 contacts → |
“For 20 years, DigitalNet Inc.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Munimentum INCmunimentum.ca HQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 3 contacts → |
“Munimentum provides management for all aspects of IT infrastructure and services for small and medium sized businesses and non-profit organizations.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Trio NET Solutions INCtnscanada.com HQ: Markham, ON, CanadaReported employees: 1-10 | Markham, ON, Canada | 1-10 | Exact match | 3 contacts → |
“Business software & network consulting firm” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Aurora Communication Technologies Corpauroratec.ca HQ: Markham, ON, CanadaReported employees: 11-50 | Markham, ON, Canada | 11-50 | Exact match | 3 contacts → |
“Aurora Communication Technologies is a Canadian manufacturer of True End-To-End Solution for Security and IT infrastructure Systems.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 47 company matches
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IT infrastructure and security companies: dataset insights
September 27, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
45 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Canada list rather than for Markham, so it is reported there. Company counts and contact totals on this page are exact for Markham, over 47 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 27, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
IT infrastructure and security companies by metro in Canada
- IT infrastructure and security companies in Toronto362
- IT infrastructure and security companies in Calgary181
- IT infrastructure and security companies in Montreal154
- IT infrastructure and security companies in Ottawa115
- IT infrastructure and security companies in Mississauga111
- IT infrastructure and security companies in Vancouver103
- IT infrastructure and security companies in Edmonton70
- IT infrastructure and security companies in Winnipeg37
- IT infrastructure and security companies in Brampton34
- IT infrastructure and security companies in London29
- IT infrastructure and security companies in Burnaby26
Questions about this company list
What does Exact match mean for IT infrastructure and security companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many IT infrastructure and security companies did RevenueBase find based in Markham, Canada?
The saved snapshot records 47 matching company records, 1,667 tracked contacts and 568 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 27, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
IT infrastructure and security companies by geography
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- IT infrastructure and security companies based in Mexico
Cite this list
RevenueBase Data Team. Top 25 IT infrastructure and security companies based in Markham, Canada. Snapshot: September 27, 2026. https://revenuebase.ai/companies/it-infrastructure-and-security-companies/canada/markham.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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