Company lists · Data refreshed September 2026
Top 25 Calling services worldwide
RevenueBase identified 332 company matches for calling services worldwide as of September 2026 and tracks 5,113 professional contacts across them, including 994 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for calling services worldwide, 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 21, 2026. Country and city lists for calling services follow the table.
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 calling services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 606 contacts → | ||||
Exact match “Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 430 contacts → | ||||
Exact match “TELNOR (Teléfonos del Noroeste), empresa líder en servicios de comunicación de telefonía local, larga distancia, proveedora de internet, servicios similares y soluciones…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 398 contacts → | ||||
Exact match “At Ritter Communications, we have over a century-long tradition of providing quality residential and business communication services all across Arkansas.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 229 contacts → | ||||
Exact match “Telikom PNG is the leading telecommunications company with a telecommunications system that is among the most modern in the South Pacific region.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 140 contacts → | ||||
Exact match “General info Mobitel telecommunications services PLC Vilharjeva 23, 1537 Ljubljana, Slovenia Tel:+ 386 (0)1 47 22 200 Fax:+ 386 (0)1 47 22 990 EU VAT number: SI64679438…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 96 contacts → | ||||
Exact match “Qwest is a leading provider of voice, video, and data services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 79 contacts → | ||||
Exact match “Michigan-based TelNet Worldwide, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 76 contacts → | ||||
Exact match “Headquartered in Fort Lee, NJ, Locus Telecommunications is an established, leading provider of long distance, wireless, point-of-sale and carrier services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 74 contacts → | ||||
Exact match “Cloudli is a leading provider of next generation voice, messaging, and data communications solutions for businesses and consumers.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 72 contacts → | ||||
Exact match “Tu operador de Telecomunicaciones” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 67 contacts → | ||||
Exact match “Headquartered in New York City, InterGlobe Communications is a one stop network service provider.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 51 contacts → | ||||
Exact match “Redvoiss fue la primera empresa latinoamericana en ofrecer el servicio de Telefonía por Internet, cuenta con más de una década en el mercado de las telecomunicaciones.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 48 contacts → | ||||
Exact match “SRVR - the leader in International Telecommunications – helps our customers connect with the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 45 contacts → | ||||
Exact match “Since 1980, TCI has provided advanced telecommunication, voice, data and networking solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 38 contacts → | ||||
Exact match “Big River Communications is a full-service telecommunications provider serving North America for over 25 years, as well as delivering Voice over IP (VoIP) to service providers…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 36 contacts → | ||||
Exact match “Established in 2002, Selectcom Telecom is one of Canada’s leading providers of voice, data and IP telephony solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 27 contacts → | ||||
Exact match “Shree Telecom LLC is a USA Based VoIP company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 26 contacts → | ||||
Exact match “CornerStone Telephone Company provides business customers with voice and data communications, cloud computing, data center services and hosted IP products, all coupled with…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 25 contacts → | ||||
Exact match “OPTO Group is an Ultimate Communication Solution Provider having its presence in over 36 countries.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 24 contacts → | ||||
Exact match “Mainstream Digital – Communications Solutions for Business Mainstream Digital is a Business Communications solutions provider with over 20 years of telecommunications experience.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 22 contacts → | ||||
Exact match “VoxSun Telecom, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 22 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 21 contacts → | ||||
Exact match “Televergence has been saving contact centers and other high volume users an average of 30% savings over AT & T and Verizon on toll free (TF)and long distance pricing for over 33…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 20 contacts → | ||||
Exact match “When you choose Southern California Telephone Company for all your communication needs, we will customize a money-saving, worry-free plan for your home or business that covers…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 17 contacts → | ||||
Exact match “UniVoxx provides business telecommunications ranging from business phones to call centers for companies of all sizes and service providers.” Recorded in the RevenueBase company graph · Sep 21, 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 “calling services”. 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 332 calling services worldwide
See the full list, filter by size, metro and specialty, and access 994 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Calling services worldwide at a glance
As of Sep 21, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for calling services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “calling services” 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. 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 994 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 21, 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.
Calling services by location
1 lists · largest firstEvery Calling services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 “calling services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many calling services are there worldwide?
RevenueBase identified 332 company matches for calling services worldwide 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?
Ooma, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most calling services?
The United States leads with 100 companies. Every calling services list by country and city is linked on this page.
Which city has the most calling services?
London leads with 8 company records, followed by New York (8) and Sao Paulo (4).
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 994 professional contacts with verified work emails tracked across these 332 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 332 calling services worldwide. Start with a free account, no credit card.
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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
Company intelligence · public preview
Top 25 calling services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 332 matching company records for calling services worldwide, with 5,113 tracked contacts and 994 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 21, 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 calling services worldwide
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 |  Ooma, INCooma.comHQ: Sunnyvale, CA, United StatesReported employees: 501-1,000 | Sunnyvale, CA, United States | 501-1,000 | Exact match | 606 contacts → |
“Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Telnortelnor.comHQ: Tijuana, MexicoReported employees: 1,001-5,000 | Tijuana, Mexico | 1,001-5,000 | Exact match | 430 contacts → |
“TELNOR (Teléfonos del Noroeste), empresa líder en servicios de comunicación de telefonía local, larga distancia, proveedora de internet, servicios similares y soluciones…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Ritter Communicationsrittercommunications.comHQ: Jonesboro, AR, United StatesReported employees: 201-500 | Jonesboro, AR, United States | 201-500 | Exact match | 398 contacts → |
“At Ritter Communications, we have over a century-long tradition of providing quality residential and business communication services all across Arkansas.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Telikom PNG Limitedtelikompng.com.pg HQ: Port Moresby, Papua New GuineaReported employees: 501-1,000 | Port Moresby, Papua New Guinea | 501-1,000 | Exact match | 229 contacts → |
“Telikom PNG is the leading telecommunications company with a telecommunications system that is among the most modern in the South Pacific region.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Mobitel D.Dmobitel.si HQ: Ljubljana, SloveniaReported employees: 501-1,000 | Ljubljana, Slovenia | 501-1,000 | Exact match | 140 contacts → |
“General info Mobitel telecommunications services PLC Vilharjeva 23, 1537 Ljubljana, Slovenia Tel:+ 386 (0)1 47 22 200 Fax:+ 386 (0)1 47 22 990 EU VAT number: SI64679438…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: Denver, CO, United StatesReported employees: Not recorded | Denver, CO, United States | Not recorded | Exact match | 96 contacts → |
“Qwest is a leading provider of voice, video, and data services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Telnet Worldwide An Ipfone Companytelnetww.com HQ: Southfield, MI, United StatesReported employees: 51-200 | Southfield, MI, United States | 51-200 | Exact match | 79 contacts → |
“Michigan-based TelNet Worldwide, Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Locus Telecommunications, LLClocus.net HQ: Fort Lee, NJ, United StatesReported employees: 201-500 | Fort Lee, NJ, United States | 201-500 | Exact match | 76 contacts → |
“Headquartered in Fort Lee, NJ, Locus Telecommunications is an established, leading provider of long distance, wireless, point-of-sale and carrier services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cloudli Communicationscloudli.comHQ: Montréal, CanadaReported employees: 51-200 | Montréal, Canada | 51-200 | Exact match | 74 contacts → |
“Cloudli is a leading provider of next generation voice, messaging, and data communications solutions for businesses and consumers.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Ausartaaureamotriz.comHQ: Erandio, SpainReported employees: 51-200 | Erandio, Spain | 51-200 | Exact match | 72 contacts → |
“Tu operador de Telecomunicaciones” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Interglobe Communicationsnyigc.comHQ: Staten Island, United StatesReported employees: 51-200 | Staten Island, United States | 51-200 | Exact match | 67 contacts → |
“Headquartered in New York City, InterGlobe Communications is a one stop network service provider.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Redvoissredvoiss.net HQ: Providencia, ChileReported employees: 51-200 | Providencia, Chile | 51-200 | Exact match | 51 contacts → |
“Redvoiss fue la primera empresa latinoamericana en ofrecer el servicio de Telefonía por Internet, cuenta con más de una década en el mercado de las telecomunicaciones.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Srvr, LLCsrvrco.com HQ: Troy, MI, United StatesReported employees: 201-500 | Troy, MI, United States | 201-500 | Exact match | 48 contacts → |
“SRVR - the leader in International Telecommunications – helps our customers connect with the world.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | TCItcicomm.com HQ: Springfield, VA, United StatesReported employees: 11-50 | Springfield, VA, United States | 11-50 | Exact match | 45 contacts → |
“Since 1980, TCI has provided advanced telecommunication, voice, data and networking solutions.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  BIG River Communicationsbigrivercom.comHQ: Cape Girardeau, MO, United StatesReported employees: 51-200 | Cape Girardeau, MO, United States | 51-200 | Exact match | 38 contacts → |
“Big River Communications is a full-service telecommunications provider serving North America for over 25 years, as well as delivering Voice over IP (VoIP) to service providers…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Selectcom Telecomselectcomtelecom.caHQ: Montréal, QC, CanadaReported employees: 51-200 | Montréal, QC, Canada | 51-200 | Exact match | 36 contacts → |
“Established in 2002, Selectcom Telecom is one of Canada’s leading providers of voice, data and IP telephony solutions.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Shree Telecom LLCshreetelecomllc.com HQ: Sheridan, United StatesReported employees: 1-10 | Sheridan, United States | 1-10 | Exact match | 27 contacts → |
“Shree Telecom LLC is a USA Based VoIP company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Cornerstone Telephone Companycstel.com HQ: Troy, NY, United StatesReported employees: 51-200 | Troy, NY, United States | 51-200 | Exact match | 26 contacts → |
“CornerStone Telephone Company provides business customers with voice and data communications, cloud computing, data center services and hosted IP products, all coupled with…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Opto Groupglobal-uc.com HQ: IndiaReported employees: 501-1,000 | India | 501-1,000 | Exact match | 25 contacts → |
“OPTO Group is an Ultimate Communication Solution Provider having its presence in over 36 countries.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Mainstream Digitalmsdigital.comHQ: Cirencester, United KingdomReported employees: 11-50 | Cirencester, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Mainstream Digital – Communications Solutions for Business Mainstream Digital is a Business Communications solutions provider with over 20 years of telecommunications experience.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Voxsunvoxsun.com HQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 22 contacts → |
“VoxSun Telecom, Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Telcentristelcentris.comHQ: San Diego, CA, United StatesReported employees: 51-200 | San Diego, CA, United States | 51-200 | Exact match | 22 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Televergence Solutionstelevergence.com HQ: Nashville, TN, United StatesReported employees: 11-50 | Nashville, TN, United States | 11-50 | Exact match | 21 contacts → |
“Televergence has been saving contact centers and other high volume users an average of 30% savings over AT & T and Verizon on toll free (TF)and long distance pricing for over 33…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Southern California Telephone Companysocaltelephone.com HQ: Temecula, CA, United StatesReported employees: 51-200 | Temecula, CA, United States | 51-200 | Exact match | 20 contacts → |
“When you choose Southern California Telephone Company for all your communication needs, we will customize a money-saving, worry-free plan for your home or business that covers…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Univoxxunivoxx.com HQ: Bloomfield Hills, MI, United StatesReported employees: 11-50 | Bloomfield Hills, MI, United States | 11-50 | Exact match | 17 contacts → |
“UniVoxx provides business telecommunications ranging from business phones to call centers for companies of all sizes and service providers.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 332 company matches
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Calling services: dataset insights
September 21, 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
331 records in the displayed employee bands.
1 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 country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 332 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 21, 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 ↗
Calling services by location
1 lists · largest firstEvery Calling services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for calling services?
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 calling services did RevenueBase find worldwide?
The saved snapshot records 332 matching company records, 5,113 tracked contacts and 994 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 21, 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
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Cite this list
RevenueBase Data Team. Top 25 calling services worldwide. Snapshot: September 21, 2026. https://revenuebase.ai/companies/browse/calling-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 calling services worldwide
RevenueBase records 332 matching company records for calling services worldwide, with 5,113 tracked contacts and 994 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 21, 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 calling services worldwide
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 | Ooma, INCooma.com HQ: Sunnyvale, CA, United StatesReported employees: 501-1,000 | Sunnyvale, CA, United States | 501-1,000 | Exact match | 606 contacts → |
“Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Telnortelnor.com HQ: Tijuana, MexicoReported employees: 1,001-5,000 | Tijuana, Mexico | 1,001-5,000 | Exact match | 430 contacts → |
“TELNOR (Teléfonos del Noroeste), empresa líder en servicios de comunicación de telefonía local, larga distancia, proveedora de internet, servicios similares y soluciones…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ritter Communicationsrittercommunications.com HQ: Jonesboro, AR, United StatesReported employees: 201-500 | Jonesboro, AR, United States | 201-500 | Exact match | 398 contacts → |
“At Ritter Communications, we have over a century-long tradition of providing quality residential and business communication services all across Arkansas.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Telikom PNG Limitedtelikompng.com.pg HQ: Port Moresby, Papua New GuineaReported employees: 501-1,000 | Port Moresby, Papua New Guinea | 501-1,000 | Exact match | 229 contacts → |
“Telikom PNG is the leading telecommunications company with a telecommunications system that is among the most modern in the South Pacific region.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Mobitel D.Dmobitel.si HQ: Ljubljana, SloveniaReported employees: 501-1,000 | Ljubljana, Slovenia | 501-1,000 | Exact match | 140 contacts → |
“General info Mobitel telecommunications services PLC Vilharjeva 23, 1537 Ljubljana, Slovenia Tel:+ 386 (0)1 47 22 200 Fax:+ 386 (0)1 47 22 990 EU VAT number: SI64679438…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: Denver, CO, United StatesReported employees: Not recorded | Denver, CO, United States | Not recorded | Exact match | 96 contacts → |
“Qwest is a leading provider of voice, video, and data services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Telnet Worldwide An Ipfone Companytelnetww.com HQ: Southfield, MI, United StatesReported employees: 51-200 | Southfield, MI, United States | 51-200 | Exact match | 79 contacts → |
“Michigan-based TelNet Worldwide, Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Locus Telecommunications, LLClocus.net HQ: Fort Lee, NJ, United StatesReported employees: 201-500 | Fort Lee, NJ, United States | 201-500 | Exact match | 76 contacts → |
“Headquartered in Fort Lee, NJ, Locus Telecommunications is an established, leading provider of long distance, wireless, point-of-sale and carrier services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cloudli Communicationscloudli.com HQ: Montréal, CanadaReported employees: 51-200 | Montréal, Canada | 51-200 | Exact match | 74 contacts → |
“Cloudli is a leading provider of next generation voice, messaging, and data communications solutions for businesses and consumers.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Ausartaaureamotriz.com HQ: Erandio, SpainReported employees: 51-200 | Erandio, Spain | 51-200 | Exact match | 72 contacts → |
“Tu operador de Telecomunicaciones” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Interglobe Communicationsnyigc.com HQ: Staten Island, United StatesReported employees: 51-200 | Staten Island, United States | 51-200 | Exact match | 67 contacts → |
“Headquartered in New York City, InterGlobe Communications is a one stop network service provider.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Redvoissredvoiss.net HQ: Providencia, ChileReported employees: 51-200 | Providencia, Chile | 51-200 | Exact match | 51 contacts → |
“Redvoiss fue la primera empresa latinoamericana en ofrecer el servicio de Telefonía por Internet, cuenta con más de una década en el mercado de las telecomunicaciones.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Srvr, LLCsrvrco.com HQ: Troy, MI, United StatesReported employees: 201-500 | Troy, MI, United States | 201-500 | Exact match | 48 contacts → |
“SRVR - the leader in International Telecommunications – helps our customers connect with the world.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | TCItcicomm.com HQ: Springfield, VA, United StatesReported employees: 11-50 | Springfield, VA, United States | 11-50 | Exact match | 45 contacts → |
“Since 1980, TCI has provided advanced telecommunication, voice, data and networking solutions.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | BIG River Communicationsbigrivercom.com HQ: Cape Girardeau, MO, United StatesReported employees: 51-200 | Cape Girardeau, MO, United States | 51-200 | Exact match | 38 contacts → |
“Big River Communications is a full-service telecommunications provider serving North America for over 25 years, as well as delivering Voice over IP (VoIP) to service providers…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Selectcom Telecomselectcomtelecom.ca HQ: Montréal, QC, CanadaReported employees: 51-200 | Montréal, QC, Canada | 51-200 | Exact match | 36 contacts → |
“Established in 2002, Selectcom Telecom is one of Canada’s leading providers of voice, data and IP telephony solutions.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Shree Telecom LLCshreetelecomllc.com HQ: Sheridan, United StatesReported employees: 1-10 | Sheridan, United States | 1-10 | Exact match | 27 contacts → |
“Shree Telecom LLC is a USA Based VoIP company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Cornerstone Telephone Companycstel.com HQ: Troy, NY, United StatesReported employees: 51-200 | Troy, NY, United States | 51-200 | Exact match | 26 contacts → |
“CornerStone Telephone Company provides business customers with voice and data communications, cloud computing, data center services and hosted IP products, all coupled with…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Opto Groupglobal-uc.com HQ: IndiaReported employees: 501-1,000 | India | 501-1,000 | Exact match | 25 contacts → |
“OPTO Group is an Ultimate Communication Solution Provider having its presence in over 36 countries.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Mainstream Digitalmsdigital.com HQ: Cirencester, United KingdomReported employees: 11-50 | Cirencester, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Mainstream Digital – Communications Solutions for Business Mainstream Digital is a Business Communications solutions provider with over 20 years of telecommunications experience.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Voxsunvoxsun.com HQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 22 contacts → |
“VoxSun Telecom, Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Telcentristelcentris.com HQ: San Diego, CA, United StatesReported employees: 51-200 | San Diego, CA, United States | 51-200 | Exact match | 22 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Televergence Solutionstelevergence.com HQ: Nashville, TN, United StatesReported employees: 11-50 | Nashville, TN, United States | 11-50 | Exact match | 21 contacts → |
“Televergence has been saving contact centers and other high volume users an average of 30% savings over AT & T and Verizon on toll free (TF)and long distance pricing for over 33…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Southern California Telephone Companysocaltelephone.com HQ: Temecula, CA, United StatesReported employees: 51-200 | Temecula, CA, United States | 51-200 | Exact match | 20 contacts → |
“When you choose Southern California Telephone Company for all your communication needs, we will customize a money-saving, worry-free plan for your home or business that covers…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Univoxxunivoxx.com HQ: Bloomfield Hills, MI, United StatesReported employees: 11-50 | Bloomfield Hills, MI, United States | 11-50 | Exact match | 17 contacts → |
“UniVoxx provides business telecommunications ranging from business phones to call centers for companies of all sizes and service providers.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 332 company matches
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Calling services: dataset insights
September 21, 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
331 records in the displayed employee bands.
1 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 country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 332 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 21, 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 ↗
Calling services by location
1 lists · largest firstEvery Calling services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for calling services?
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 calling services did RevenueBase find worldwide?
The saved snapshot records 332 matching company records, 5,113 tracked contacts and 994 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 21, 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
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Cite this list
RevenueBase Data Team. Top 25 calling services worldwide. Snapshot: September 21, 2026. https://revenuebase.ai/companies/browse/calling-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗