Company lists · Data refreshed September 2026

Top 24 IT infrastructure consulting firms based in the United States

RevenueBase identified 26,119 IT infrastructure consulting firms headquartered in the United States as of September 2026 and tracks 732,577 professional contacts across them, including 252,356 with verified work emails and 182,990 with mobile numbers. New York is the largest hub.

This list covers IT infrastructure consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
26,119Companies
732,577Contacts tracked
252,356Verified emails
182,990Mobile numbers
Unlock all 26,119 companies Free signup · no credit card · 500 free credits

The 24 largest IT infrastructure consulting firms based in the United States

Ranked by team size
Top 24 of 26,119 IT infrastructure consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
DXC TechnologyPartial evidence
Ashburn, VA, United StatesHQ checked Sep 4, 202610001+82,827

“DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…”

Source: company website · checked Sep 4, 2026
2
KyndrylPartial evidence
New York City, NY, United StatesHQ checked Sep 4, 202610001+46,259

“We have the world’s best talent that design, run, and manage the most advanced and reliable technology infrastructure each day.”

Source: company website · checked Sep 4, 2026
3
Insight GlobalPartial evidence
Atlanta, CT, United StatesHQ checked Sep 4, 2026n/a15,381

“Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.”

Source: company website · checked Sep 4, 2026
4
CDWIndirect evidence
Vernon Hills, IL, United StatesHQ checked Sep 4, 202610001+13,120

“At CDW, we know how to make technology work so people can do great things.”

Source: company website · checked Sep 4, 2026
5
GuidehouseIndirect evidence
Mclean, SD, United StatesHQ checked Sep 4, 202610001+12,933

“Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.”

Source: company website · checked Sep 4, 2026
6
Apex SystemsIndirect evidence
Glen Allen, VA, United StatesHQ checked Sep 4, 20261,001-5,00012,222

“Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…”

Source: company website · checked Sep 4, 2026
7
World Wide TechnologyIndirect evidence
Maryland Heights, AK, United StatesHQ checked Sep 4, 202610001+9,138

“We are thinkers and doers.”

Source: company website · checked Sep 4, 2026
8
Comcast BusinessIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 4, 202610001+8,346
Source: company website · checked Sep 4, 2026
9
Visionet Systems INCIndirect evidence
Cranbury, NJ, United StatesHQ checked Sep 4, 202610001+3,113

“Visionet is a premier digital technology solutions company built on the premise of disruptive innovation.”

Source: company website · checked Sep 4, 2026
10Reston, VA, United StatesHQ checked Sep 4, 202610001+3,102

“Genpact Headstrong Capital Markets is a global consulting and IT services company with a specialized focus in capital markets.”

Source: company website · checked Sep 4, 2026
11
AHEADPartial evidence
Chicago, WI, United StatesHQ checked Sep 4, 20261,001-5,0002,990

“AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.”

Source: company website · checked Sep 4, 2026
12
GTTIndirect evidence
Arlington, VA, United StatesHQ checked Sep 4, 20261,001-5,0002,970

“GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…”

Source: company website · checked Sep 4, 2026
13
Compunnel INCIndirect evidence
Princeton, United StatesHQ checked Sep 4, 20265,001-10,0002,568

“Compunnel serves as a global partner for talent, digital, and cybersecurity solutions, designed to help enterprises staff critical roles, modernize technology, and strengthen…”

Source: company website · checked Sep 4, 2026
14
Oxford Global ResourcesIndirect evidence
Beverly, VA, United StatesHQ checked Sep 4, 2026501-1,0002,561

“Oxford Global Resources delivers tailored solutions for any technical challenges you are facing using our partnership-first approach.”

Source: company website · checked Sep 4, 2026
15
BeyondsoftStrong evidence
Bellevue, WA, United StatesHQ checked Sep 4, 2026501-1,0002,358

“Beyondsoft Consulting is a leading global mid-sized business IT and consulting company that combines modern technologies and proven methodologies to tailor solutions that move…”

Source: company website · checked Sep 4, 2026
16
CTGPartial evidence
Amherst, NY, United StatesHQ checked Sep 4, 20265,001-10,0002,259

“CTG, a Cegeka company, is at the forefront of digital transformation, offering innovative IT solutions and services that accelerate your strategy and project momentum.”

Source: company website · checked Sep 4, 2026
17
Park Place TechnologiesPartial evidence
Cleveland, OH, United StatesHQ checked Sep 4, 20261,001-5,0002,247

“Park Place Technologies is the global leader in data center and networking optimization, we work with more than companies across the globe, boosting infrastructure performance…”

Source: company website · checked Sep 4, 2026
18
OPTIVIndirect evidence
Leawood, VA, United StatesHQ checked Sep 4, 20261,001-5,0002,206

“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.”

Source: company website · checked Sep 4, 2026
19
Jade GlobalPartial evidence
San Jose, PA, United StatesHQ checked Sep 4, 20261,001-5,0001,891

“Jade Global is a premier consulting, integration, and managed services partner helping enterprises modernize, innovate, and scale.”

Source: company website · checked Sep 4, 2026
20
GURUStrong evidence
Rockville, MD, United StatesHQ checked Sep 4, 2026n/a1,868

“Established in 1995, GURU is an IT managed service provider that specializes in infrastructure support, systems integration, data architecture, data hosting, and cloud services.”

Source: company website · checked Sep 4, 2026
21
NEW ERA TechnologyPartial evidence
West Chester, FL, United StatesHQ checked Sep 4, 20261,001-5,0001,842

“New Era Technology is the AI, application, and infrastructure partner that simplifies, secures, and scales technology across modern work environments.”

Source: company website · checked Sep 4, 2026
22
IES CommunicationsIndirect evidence
Tempe, CO, United StatesHQ checked Sep 4, 20261,001-5,0001,787

“IES Communications a division of IES (NASDAQ: IESC) provides each client with a team of highly qualified dedicated professionals that deliver superior quality and cost effective…”

Source: company website · checked Sep 4, 2026
23
Tech MahindraIndirect evidence
Streetman, TX, United StatesHQ checked Sep 4, 2026n/a1,786
Source: company website · checked Sep 4, 2026
24
Eplus INCPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 20261,001-5,0001,783

“ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…”

Source: company website · checked Sep 4, 2026

Showing 24 of 26,119 IT infrastructure consulting firms based in the United States

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IT infrastructure consulting firms based in the United States at a glance

As of Sep 4, 2026
1-10Median size (employees)
New YorkLargest hub · 807 HQs
182,990Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
13,601
11-50
8,367
51-200
3,006
201-500
658
501-1,000
226
1,001-5,000
119
5,001-10,000
19
10001+
36

Verified emails by last verification

0–30
0
31–60
20,286
61–90
136,312
90–180
91,510
180+
4,248

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 infrastructure consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among IT infrastructure consulting firms, 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 an evidence 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, 252,356 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 4, 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 infrastructure consulting firms by metro

Frequently asked

How many IT infrastructure consulting firms are there based in the United States?

RevenueBase identified 26,119 IT infrastructure consulting firms 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?

DXC Technology, headquartered in Ashburn, tops this list with the largest team on record.

Which city has the most IT infrastructure consulting firms?

New York leads with 807 headquartered companies, followed by Houston (522) and Atlanta (402).

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 252,356 verified decision-maker contacts tracked across these 26,119 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 4, 2026.

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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.