Company lists · Data refreshed September 2026

Top 25 Voip service providers worldwide

Name: Voip service providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 2,514 companies tracked

RevenueBase identified 2,514 voip service providers worldwide as of September 2026 and tracks 37,387 professional contacts across them, including 11,324 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers voip service providers worldwide, 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 16, 2026. Country and city lists for voip service providers follow the table.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

2,514Companies

37,387Contacts tracked

11,324Verified emails

0Mobile numbers

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The 25 largest voip service providers worldwide

Ranked by team size

Top 25 of 2,514 voip service providers worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to voip service providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	GOTO	Indirect evidence	Boston, MA, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,320 contacts →
	Indirect evidence “As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.” Source: RevenueBase Database · checked Sep 16, 2026
2	GAMMA	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,568 contacts →
	Indirect evidence “Gamma Communications is a leading provider of technology-based communication solutions across Europe.” Source: RevenueBase Database · checked Sep 16, 2026
3	Intermedia Intelligent Communications	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,254 contacts →
	Indirect evidence “Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…” Source: RevenueBase Database · checked Sep 16, 2026
4	Integra	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 16, 2026	501-1,000	1,133 contacts →
	Indirect evidence “Integra is Allstream.” Source: RevenueBase Database · checked Sep 16, 2026
5	Shoretel	Indirect evidence	Kanata, CanadaHQ checked Sep 16, 2026	1,001-5,000	691 contacts →
	Indirect evidence “ShoreTel is now part of Mitel.” Source: RevenueBase Database · checked Sep 16, 2026
6	Onecom	Indirect evidence	Fareham, United KingdomHQ checked Sep 16, 2026	501-1,000	655 contacts →
	Indirect evidence “Onecom is the UK’s leading business telecoms and cloud communications provider managing over a million services for business customers - delivering communication services and…” Source: RevenueBase Database · checked Sep 16, 2026
7	Ooma, INC	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 16, 2026	501-1,000	606 contacts →
	Indirect evidence “Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.” Source: RevenueBase Database · checked Sep 16, 2026
8	Sangoma	Indirect evidence	Markham, ON, CanadaHQ checked Sep 16, 2026	201-500	454 contacts →
	Indirect evidence “Sangoma Technologies Corporation (TSX: STC; Nasdaq: SANG) is a global leader in essential business communications.” Source: RevenueBase Database · checked Sep 16, 2026
9	Spectrumvoip	Indirect evidence	Plano, TX, United StatesHQ checked Sep 16, 2026	201-500	435 contacts →
	Indirect evidence “Family owned and proudly based in Plano, Texas, SpectrumVoIP has kept businesses talking and thriving since 2007.” Source: RevenueBase Database · checked Sep 16, 2026
10	NEW Horizon Communications	Indirect evidence	Concord, MA, United StatesHQ checked Sep 16, 2026	51-200	435 contacts →
	Indirect evidence “NHC is THE communications STACK provider™.” Source: RevenueBase Database · checked Sep 16, 2026
11	Fusion Connect	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 16, 2026	201-500	425 contacts →
	Indirect evidence “Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Source: RevenueBase Database · checked Sep 16, 2026
12	Stelogy	Strong evidence	Paris, FranceHQ checked Sep 16, 2026	501-1,000	403 contacts →
	Strong evidence “VoIP/ToIP services Operator and Integrator Telephony solutions for small and medium-sized enterprises.” Source: RevenueBase Database · checked Sep 16, 2026
13	phone.com	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	201-500	398 contacts →
	Indirect evidence “Founded in 2008 by veteran telecommunication entrepreneurs, Phone.com provides over businesses with comprehensive, flexible, and reliable cloud-based communication and…” Source: RevenueBase Database · checked Sep 16, 2026
14	KEYYO	Indirect evidence	Clichy, FranceHQ checked Sep 16, 2026	201-500	319 contacts →
	Indirect evidence “Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.” Source: RevenueBase Database · checked Sep 16, 2026
15	BCM ONE	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	501-1,000	308 contacts →
	Indirect evidence “Founded in 1992, BCM One is a corporate communications company that powers business connectivity for organizations ranging from SMBs to global enterprises.” Source: RevenueBase Database · checked Sep 16, 2026
16	Broadsoft	Indirect evidence	Gaithersburg, MD, United StatesHQ checked Sep 16, 2026	1,001-5,000	252 contacts →
	Indirect evidence “BroadSoft, now part of Cisco, is the leading provider of software and services that enable mobile, fixed-line and cable service providers to offer Unified Communications over…” Source: RevenueBase Database · checked Sep 16, 2026
17	Dialogic	Indirect evidence	Parsippany, NJ, United StatesHQ checked Sep 16, 2026	201-500	241 contacts →
	Indirect evidence “A leading cloud-optimized solutions provider for real-time communications media, applications, and infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
18	Pulse Telesystems	Indirect evidence	Chennai, IndiaHQ checked Sep 16, 2026	51-200	175 contacts →
	Indirect evidence “Pulse Telesystems is a leading telecom solution provider in India, offering businesses personalized telecom solutions that meet their growing needs and beyond.” Source: RevenueBase Database · checked Sep 16, 2026
19	Firstcomm	Indirect evidence	Fairlawn, OH, United StatesHQ checked Sep 16, 2026	51-200	174 contacts →
	Indirect evidence “FirstComm delivers smarter business communications and IT solutions that help organizations connect, collaborate, and scale with confidence.” Source: RevenueBase Database · checked Sep 16, 2026
20	Bonline	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	170 contacts →
	Strong evidence “bOnline is UK’s leading provider of VoIP services for micro and small businesses.” Source: RevenueBase Database · checked Sep 16, 2026
21	Fortis	Strong evidence	Sacramento, CA, United StatesHQ checked Sep 16, 2026	n/a	170 contacts →
	Strong evidence “Fortis is a Sacramento Area provider of managed IT services, hosted VoIP, and high speed, redundant internet.” Source: RevenueBase Database · checked Sep 16, 2026
22	Voip Office	Strong evidence	Bangalore, United StatesHQ checked Sep 16, 2026	201-500	167 contacts →
	Strong evidence “VoIP Office, founded in 2004, delivers cloud-based communications and hosted PBX solutions for businesses from home offices to enterprises, combining traditional PBX features with…” Source: RevenueBase Database · checked Sep 16, 2026
23	DSTNY	Indirect evidence	Zaventem, BelgiumHQ checked Sep 16, 2026	501-1,000	159 contacts →
	Indirect evidence “Destiny, originally Belgian, is a European leader and innovator in secure cloud communications based on its strong and secure mobile-first products and Ucaas offerings.” Source: RevenueBase Database · checked Sep 16, 2026
24	Zultys	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 16, 2026	51-200	159 contacts →
	Indirect evidence “Zultys is a premier provider of omnichannel, Unified Communications, hosted business phone services and premise-based communications systems.” Source: RevenueBase Database · checked Sep 16, 2026
25	IT Voice	Strong evidence	Birmingham, AL, United StatesHQ checked Sep 16, 2026	51-200	154 contacts →
	Strong evidence “IT Voice specializes in Managed IT and VoIP solutions.” Source: RevenueBase Database · checked Sep 16, 2026

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: voip service providers. 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 voip service providers.
Partial evidence: Its own public description names part of voip service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name voip service providers. 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 2,514 voip service providers worldwide

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Voip service providers worldwide at a glance

As of Sep 16, 2026

30.3%Verified-email coverage

14.9Average contacts per company

11-50Median size (employees)

4.3%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

1,078

11-50

1,070

51-200

265

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 voip service providers, 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.
Coverage: 14 countries, largest first: the United States, the United Kingdom, Canada, Brazil, Australia, India, the Netherlands, Spain, France, South Africa and 4 more. Country and city lists for voip service providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “voip service providers”. 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 voip service providers), 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 voip service providers, and records with no verified work email.
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, 11,324 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 16, 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.

Voip service providers by location

14 lists · largest first

Every Voip service providers 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 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 voip service providers, 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 voip service providers are there worldwide?

RevenueBase identified 2,514 voip service providers worldwide 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?

GOTO, headquartered in Boston, tops this list with the largest team on record.

Which country has the most voip service providers?

The United States leads with 1,172 companies, followed by the United Kingdom (386) and Canada (157). Every voip service providers list by country and city is linked on this page.

Which city has the most voip service providers?

London leads with 107 headquartered companies, followed by New York (48) and Sao Paulo (37).

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 11,324 verified decision-maker contacts tracked across these 2,514 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 16, 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 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.