Company lists · Data refreshed November 2026

Top 25 Voice and data contractors worldwide

RevenueBase identified 10,146 company matches for voice and data contractors worldwide as of November 2026 and tracks 127,592 professional contacts across them, including 26,859 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for voice and data contractors 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 November 6, 2026. Country and city lists for voice and data contractors 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
10,146Companies
127,592Contacts tracked
26,859Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest voice and data contractors worldwide

Ranked by team size
Top 25 of 10,146 company matches for voice and data contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 202610001+8,708 contacts →

Exact match

“A Serede é uma empresa prestadora de serviços de implantação e manutenção em redes de Telecom, fundada em 06 de agosto de 2007.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLittle Rock, AR, United StatesHQ recorded Nov 6, 202610001+7,649 contacts →

Exact match

“Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchQuincy, MA, United StatesHQ recorded Nov 6, 20261,001-5,0002,395 contacts →

Exact match

“Granite is a dynamic and rapidly growing company serving the exciting and demanding Telecommunications market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchTempe, AZ, United StatesHQ recorded Nov 6, 20261,001-5,0001,994 contacts →

Exact match

“IES Communications, a division of IES Holdings, Inc.(NASDAQ: IESC), is a national technology infrastructure integrator.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchNew Delhi, IndiaHQ recorded Nov 6, 20261,001-5,0001,601 contacts →

Exact match

“Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLenexa, CA, United StatesHQ recorded Nov 6, 20261,001-5,0001,356 contacts →

Exact match

“Wachter is on the cutting-edge of technology and infrastructure installation and has been since 1930.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWembley, United KingdomHQ recorded Nov 6, 20261,001-5,0001,204 contacts →

Exact match

“Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSão Paulo, BrazilHQ recorded Nov 6, 2026501-1,000916 contacts →

Exact match

“Com mais de 25 anos de experiência, a Mundivox é uma operadora licenciada pela Anatel, especializada em soluções integradas de comunicação para o mercado corporativo.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchPaterna, SpainHQ recorded Nov 6, 20261,001-5,000810 contacts →

Exact match

“NUNSYS es una empresa especializada en la Implantación de Soluciones Integrales de Tecnología.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBangalore, IndiaHQ recorded Nov 6, 2026201-500688 contacts →

Exact match

“We @ VIS Networks (Voice Infrastructure Services) believe in the future of technology services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPacific, MO, United StatesHQ recorded Nov 6, 20261,001-5,000665 contacts →

Exact match

“ADB is an industry-leading infrastructure solutions provider, proudly building networks, connections, and partnerships nationwide within the telecommunications and utility…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchJaboticabal, BrazilHQ recorded Nov 6, 20261,001-5,000551 contacts →

Exact match

“B.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchFranceHQ recorded Nov 6, 202651-200506 contacts →

Exact match

“Telecommunication Installation and Maintenance”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSeattle, OR, United StatesHQ recorded Nov 6, 2026501-1,000454 contacts →

Exact match

“For more than 70 years Cochran has been powering the Pacific Northwest.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchUnited StatesHQ recorded Nov 6, 20261,001-5,000449 contacts →

Exact match

“A national telecommunications customer service fulfillment company, Prince Telecom specializes in Residential & Commercial installations, repair and construction services for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchQuincy, MA, United StatesHQ recorded Nov 6, 20261,001-5,000426 contacts →

Exact match

“At the heart of our company are employees who truly care about customers and ensuring they are connected through Internet, TV, and Voice.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchDerby, United KingdomHQ recorded Nov 6, 2026501-1,000421 contacts →

Exact match

“Comex is an established major strategic partner of choice within the telecommunication sector, across the United Kingdom and Ireland, offering an end to end solution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchUmraniye, TürkiyeHQ recorded Nov 6, 202651-200388 contacts →

Exact match

“Gentel Telecommunication was founded in 2006, for developing work areas and work opinions in telecommunication industry with its strong background and experience over 30 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSingaporeHQ recorded Nov 6, 2026501-1,000384 contacts →

Exact match

“Our core business activity Design and installation services for structured cabling systems,(ii) the provision of maintenance and support services for structured cabling systems…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDowners Grove, United StatesHQ recorded Nov 6, 2026501-1,000381 contacts →

Exact match

“Since 2009, National Technologies (NTI) has installed mission-critical data center infrastructure and OSP and ISP fiber solutions to keep our customers connected and competitive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLake Mary, FL, United StatesHQ recorded Nov 6, 2026n/a373 contacts →

Exact match

“ACS has over three decades of experience and unparalleled expertise in the assessment and implementation of voice and data platforms and can provide solutions for telephone…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBethel, FL, United StatesHQ recorded Nov 6, 2026201-500358 contacts →

Exact match

“ComNet Communications is a national network infrastructure integrator delivering large-scale, mission-critical deployments across the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchClearwater, MN, United StatesHQ recorded Nov 6, 2026501-1,000327 contacts →

Exact match

“TelCom is a specialized contractor providing construction and maintenance services to telecommunications providers throughout the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchKøbenhavn C, DenmarkHQ recorded Nov 6, 2026201-500297 contacts →

Exact match

“Stærkere sammen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500296 contacts →

Exact match

“DataVox is a Texas-based technology solutions provider headquartered in Houston, delivering services to organizations across major metro areas including Dallas–Fort Worth, Austin…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 10,146 voice and data contractors worldwide

See the full list, filter by size, metro and specialty, and access 26,859 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Voice and data contractors worldwide at a glance

As of Nov 6, 2026
21.1%Verified-email coverage
12.6Average contacts per company
11-50Median size (employees)
1.2%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
4,857
11-50
3,827
51-200
1,002
201-500
183
501-1,000
65
1,001-5,000
38
5,001-10,000
6
10001+
8

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 voice and data contractors are linked below.
What qualifies
Company records worldwide whose business descriptions match “voice and data contractors” 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 26,859 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 November 6, 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.

Voice and data contractors by location

44 lists · largest first

Every Voice and data contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “voice and data contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voice and data contractors are there worldwide?

RevenueBase identified 10,146 company matches for voice and data contractors worldwide as of November 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?

Serede tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most voice and data contractors?

The United States leads with 3,088 companies, followed by the United Kingdom (804) and Brazil (568). Every voice and data contractors list by country and city is linked on this page.

Which city has the most voice and data contractors?

Sao Paulo leads with 123 company records, followed by London (72) and Houston (68).

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 26,859 professional contacts with verified work emails tracked across these 10,146 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 10,146 voice and data contractors worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.