Company lists · Data refreshed September 2026
Top 25 IT support outsourcing services based in the United States
RevenueBase identified 4,646 IT support outsourcing services headquartered in the United States as of September 2026 and tracks 48,302 professional contacts across them, including 13,137 with verified work emails. New York is the largest hub.
This list covers IT support outsourcing services headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 support outsourcing services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,063 contacts → | ||||
Partial evidence “Technology only matters when it helps the business run better.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,018 contacts → | ||||
Strong evidence “CCB Technology provides award-winning IT support and project services to customers nationwide.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 871 contacts → | ||||
Strong evidence “IND specializes in fixed-cost IT support and consulting services for small and medium-sized businesses in New Jersey.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 860 contacts → | ||||
Partial evidence “Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 818 contacts → | ||||
Strong evidence “As a leading IT consulting and outsourcing services firm, Buchanan Technologies helps organizations across North America turn their business technology into a powerful competitive…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 751 contacts → | ||||
Indirect evidence “TPx is the reliable sidekick every growing business deserves, powering your tech while you take the lead.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 658 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 623 contacts → | ||||
Partial evidence “DecisionOne is the largest global independent technology support organization in the TPM and ISO markets.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 562 contacts → | ||||
Partial evidence “teleNetwork is a leading provider of outsourced customer service, technical support, and sales enablement solutions for technology products and services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 447 contacts → | ||||
Indirect evidence “Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 439 contacts → | ||||
Strong evidence “CMIT Solutions is a premier IT solution company dedicated to delivering enterprise-class IT support to businesses across North America.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 415 contacts → | ||||
Indirect evidence “The Functionary helps companies scale operations around the reality of their business, not a standard model.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 336 contacts → | ||||
Indirect evidence “Teamwork.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 326 contacts → | ||||
Strong evidence “PCM is an industry-leading added value IT Solutions Provider that develops, delivers and supports world-class IT solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 284 contacts → | ||||
Indirect evidence “World Connection helps founder-led, private equity-backed, and growth-stage small to mid-market companies transform customer experience into measurable business outcomes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 231 contacts → | ||||
Indirect evidence “ExterNetworks, headquartered in Piscataway, New Jersey, and with further strategic locations across North America, Europe, the Middle East and Asia, ExterNetworks has rapidly…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 202 contacts → | ||||
Partial evidence “Geeks on Site provides onsite and remote computer repair and technical support, depending on each customer’s needs.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 198 contacts → | ||||
Indirect evidence “AJEL is a premier provider of full range of information technology services for the agile business.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 197 contacts → | ||||
Partial evidence “Most companies think customer service is a cost center-the data shows it's your most underutilized revenue channel.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 195 contacts → | ||||
Strong evidence “Tech Americas is a global technology process outsourcing company, managed IT and 24/7 field service provider.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 188 contacts → | ||||
Indirect evidence “Imagine a world where Managed Service Providers and SaaS businesses deliver outstanding customer experience around the clock, regardless of ticket volume or technical complexity.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 187 contacts → | ||||
Partial evidence “We are a leading global outsourcing services company with highly skilled professionals working for our clients and partners.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 176 contacts → | ||||
Partial evidence “FIT Technologies is a full-service Managed IT Provider that develops long-term technology partnerships with our clients to increase efficiency, productivity, and security.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 174 contacts → | ||||
Partial evidence “Dynamic Quest is a trusted partner for small and mid-sized businesses looking to simplify and modernize their IT stack, security posture, and employee service desk solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 166 contacts → | ||||
Indirect evidence “GadellNet is a Certified B Corporation in the business of powering missions through technology.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: IT support outsourcing services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names IT support outsourcing services.
- Partial evidence
- Its own public description names part of IT support outsourcing services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT support outsourcing services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 4,646 IT support outsourcing services based in the United States
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IT support outsourcing services based in the United States at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 4,646 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among IT support outsourcing services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “IT support outsourcing services”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names IT support outsourcing services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among IT support outsourcing services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 13,137 across the full list. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
IT support outsourcing services by metro
- IT support outsourcing services in New York122
- IT support outsourcing services in Houston78
- IT support outsourcing services in Miami64
- IT support outsourcing services in Chicago49
- IT support outsourcing services in San Diego49
- IT support outsourcing services in Austin48
- IT support outsourcing services in Dallas48
- IT support outsourcing services in Los Angeles47
- IT support outsourcing services in Atlanta40
- IT support outsourcing services in Tampa38
- IT support outsourcing services in San Francisco35
- IT support outsourcing services in Las Vegas31
- IT support outsourcing services in Phoenix30
- IT support outsourcing services in Seattle30
- IT support outsourcing services in Orlando28
- IT support outsourcing services in Charlotte26
- IT support outsourcing services in Portland25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names IT support outsourcing services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many IT support outsourcing services are there based in the United States?
RevenueBase identified 4,646 IT support outsourcing services headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Solugenix, headquartered in Brea, tops this list with the largest team on record.
Which city has the most IT support outsourcing services?
New York leads with 122 headquartered companies, followed by Houston (78) and Miami (64).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 13,137 verified decision-maker contacts tracked across these 4,646 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
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IT support outsourcing services by geography
- IT support outsourcing services based in Brisbane, Australia
- IT support outsourcing services based in Melbourne, Australia
- IT support outsourcing services based in Sydney, Australia
- IT support outsourcing services based in Belo Horizonte, Brazil
- IT support outsourcing services based in Curitiba, Brazil
- IT support outsourcing services based in Porto Alegre, Brazil
- IT support outsourcing services based in Rio De Janeiro, Brazil
- IT support outsourcing services based in Sao Paulo, Brazil
- IT support outsourcing services based in Calgary, Canada
- IT support outsourcing services based in Edmonton, Canada
- IT support outsourcing services based in Mississauga, Canada
- IT support outsourcing services based in Montreal, Canada
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 Smart Search, 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.
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