Company lists · Data refreshed September 2026
Top 25 Unified communications providers based in the United States
RevenueBase identified 1,155 company matches for unified communications providers associated with the United States as of September 2026 and tracks 68,291 professional contacts across them, including 20,962 with verified work emails. New York is the largest hub.
This list covers company matches for unified communications providers associated with the United States, 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 22, 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.
The 25 largest unified communications providers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 10,510 contacts → | ||||
Exact match “At Avaya, we give our customers the freedom to take their business in the directions that benefit them most.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 2 | 9,706 contacts → | ||||
Exact match “Bring teams together, reimagine workspaces, engage new audiences, and delight your customers –– all on the Zoom AI-first work platform you know and love.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 3 | 6,431 contacts → | ||||
Exact match “RingCentral, Inc.(NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 4 | 3,429 contacts → | ||||
Exact match “We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 5 | 3,044 contacts → | ||||
Exact match “Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 6 | 2,576 contacts → | ||||
Exact match “With In-store media solutions to help you connect with your customers and grow your business, TCS delivers communication solutions that will take your business to the next level.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 7 | 2,320 contacts → | ||||
Exact match “As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 8 | 1,787 contacts → | ||||
Exact match “Plantronics and Polycom are now Poly.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 9 | 1,254 contacts → | ||||
Exact match “Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 10 | 1,133 contacts → | ||||
Exact match “Integra is Allstream.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 11 | 1,128 contacts → | ||||
Exact match “Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 12 | 606 contacts → | ||||
Exact match “Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 13 | 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 22, 2026 · View company records in RevenueBase | |||||
| 14 | 437 contacts → | ||||
Exact match “We unleash human momentum with collaboration, connectivity, and communications technology.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 15 | 435 contacts → | ||||
Exact match “NHC is THE communications STACK provider™.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 16 | 425 contacts → | ||||
Exact match “Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 17 | 423 contacts → | ||||
Exact match “The next generation of Skype from Microsoft gives you better ways to chat, call, and plan fun things to do with the people in your life every day.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 18 | 401 contacts → | ||||
Exact match “Lifesize delivers immersive communication experiences for the global enterprise.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 19 | 398 contacts → | ||||
Exact match “Founded in 2008 by veteran telecommunication entrepreneurs, Phone.com provides over businesses with comprehensive, flexible, and reliable cloud-based communication and…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 20 | 366 contacts → | ||||
Exact match “With three decades of expertise in the enterprise communications space, Continuant stands out as a seasoned Managed Services Provider, Systems Integrator, and Technology…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 21 | 362 contacts → | ||||
Exact match “ENA by Zayo delivers innovative technology solutions supported by exceptional customer care.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 22 | 327 contacts → | ||||
Exact match “We've moved pages.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 23 | 308 contacts → | ||||
Exact match “Founded in 1992, BCM One is a corporate communications company that powers business connectivity for organizations ranging from SMBs to global enterprises.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 24 | 285 contacts → | ||||
Exact match “Ultatel delivers a powerful yet easy-to-use cloud communications suite that scales with your business-combining voice, SMS, chat, video, online fax, and contact center…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 25 | 264 contacts → | ||||
Exact match “Please be advised that BlueJeans by Verizon is being sunset, concluding in the first half of 2024.” Recorded in the RevenueBase company graph · Sep 22, 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 “unified communications providers”. 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 1,155 unified communications providers based in the United States
See the full list, filter by size, metro and specialty, and access 20,962 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Unified communications providers based in the United States at a glance
As of Sep 22, 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 1,155 companies.
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.
- What qualifies
- Company records associated with the United States whose business descriptions match “unified communications providers” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 20,962 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 22, 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.
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 “unified communications providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many unified communications providers are there based in the United States?
RevenueBase identified 1,155 company matches for unified communications providers associated with the United States 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?
AVAYA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most unified communications providers?
New York leads with 40 company records, followed by Atlanta (24) and Austin (24).
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 20,962 professional contacts with verified work emails tracked across these 1,155 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 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,155 unified communications providers based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Unified communications providers by geography
- Unified communications providers based in Australia
- Unified communications providers based in Belgium
- Unified communications providers based in Brazil
- Unified communications providers based in Canada
- Unified communications providers based in France
- Unified communications providers based in Germany
- Unified communications providers based in India
- Unified communications providers based in Italy
- Unified communications providers based in Mexico
- Unified communications providers based in the Netherlands
- Unified communications providers based in South Africa
- Unified communications providers based in Spain
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Unified communications providers based in Australia
- Unified communications providers based in Belgium
- Unified communications providers based in Brazil
- Unified communications providers based in Canada
- Unified communications providers based in France
- Unified communications providers based in Germany
Company intelligence · public preview
Top 25 unified communications providers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,155 matching company records for unified communications providers based in the United States, with 68,291 tracked contacts and 20,962 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 22, 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 unified communications providers based in the United States
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 |  AVAYAtinyurl.comHQ: Morristown, NJ, United StatesReported employees: 5,001-10,000 | Morristown, NJ, United States | 5,001-10,000 | Exact match | 10,510 contacts → |
“At Avaya, we give our customers the freedom to take their business in the directions that benefit them most.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  ZOOMzoom.comHQ: San Jose, CA, United StatesReported employees: 5,001-10,000 | San Jose, CA, United States | 5,001-10,000 | Exact match | 9,706 contacts → |
“Bring teams together, reimagine workspaces, engage new audiences, and delight your customers –– all on the Zoom AI-first work platform you know and love.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Ringcentralringcentral.comHQ: Belmont, CA, United StatesReported employees: 5,001-10,000 | Belmont, CA, United States | 5,001-10,000 | Exact match | 6,431 contacts → |
“RingCentral, Inc.(NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Vonagevonage.comHQ: Holmdel, NJ, United StatesReported employees: 1,001-5,000 | Holmdel, NJ, United States | 1,001-5,000 | Exact match | 3,429 contacts → |
“We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Spectrum Businessspectrum.comHQ: Stamford, CT, United StatesReported employees: 10001+ | Stamford, CT, United States | 10001+ | Exact match | 3,044 contacts → |
“Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | TCScalltcs.com HQ: Jefferson City, MO, United StatesReported employees: Not recorded | Jefferson City, MO, United States | Not recorded | Exact match | 2,576 contacts → |
“With In-store media solutions to help you connect with your customers and grow your business, TCS delivers communication solutions that will take your business to the next level.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  GOTOgoto.comHQ: Boston, MA, United StatesReported employees: 1,001-5,000 | Boston, MA, United States | 1,001-5,000 | Exact match | 2,320 contacts → |
“As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Polycompolycom.comHQ: San Jose, CA, United StatesReported employees: 1,001-5,000 | San Jose, CA, United States | 1,001-5,000 | Exact match | 1,787 contacts → |
“Plantronics and Polycom are now Poly.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Intermedia Intelligent Communicationsintermedia.comHQ: Sunnyvale, CA, United StatesReported employees: 1,001-5,000 | Sunnyvale, CA, United States | 1,001-5,000 | Exact match | 1,254 contacts → |
“Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Integraallstream.comHQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 1,133 contacts → |
“Integra is Allstream.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Bandwidth INCbandwidth.comHQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 1,128 contacts → |
“Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Alianzaalianza.comHQ: Pleasant Grove, UT, United StatesReported employees: 501-1,000 | Pleasant Grove, UT, United States | 501-1,000 | Exact match | 606 contacts → |
“Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  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 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Momentumgomomentum.comHQ: Atlanta, GA, United StatesReported employees: 501-1,000 | Atlanta, GA, United States | 501-1,000 | Exact match | 437 contacts → |
“We unleash human momentum with collaboration, connectivity, and communications technology.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | NEW Horizon Communicationsnhcgrp.com HQ: Concord, MA, United StatesReported employees: 51-200 | Concord, MA, United States | 51-200 | Exact match | 435 contacts → |
“NHC is THE communications STACK provider™.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Fusion Connectfusionconnect.comHQ: Atlanta, GA, United StatesReported employees: 201-500 | Atlanta, GA, United States | 201-500 | Exact match | 425 contacts → |
“Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  SKYPEmicrosoft.comHQ: Redmond, WA, United StatesReported employees: 10001+ | Redmond, WA, United States | 10001+ | Exact match | 423 contacts → |
“The next generation of Skype from Microsoft gives you better ways to chat, call, and plan fun things to do with the people in your life every day.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Serenovaserenova.comHQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 401 contacts → |
“Lifesize delivers immersive communication experiences for the global enterprise.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  phone.comphone.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 398 contacts → |
“Founded in 2008 by veteran telecommunication entrepreneurs, Phone.com provides over businesses with comprehensive, flexible, and reliable cloud-based communication and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Continuantcontinuant.comHQ: Tacoma, WA, United StatesReported employees: 201-500 | Tacoma, WA, United States | 201-500 | Exact match | 366 contacts → |
“With three decades of expertise in the enterprise communications space, Continuant stands out as a seasoned Managed Services Provider, Systems Integrator, and Technology…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  ENA By Zayoena.comHQ: Nashville, TN, United StatesReported employees: 201-500 | Nashville, TN, United States | 201-500 | Exact match | 362 contacts → |
“ENA by Zayo delivers innovative technology solutions supported by exceptional customer care.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Inteliquent, A Sinch Companysinch.comHQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 327 contacts → |
“We've moved pages.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  BCM ONEbcmone.comHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 308 contacts → |
“Founded in 1992, BCM One is a corporate communications company that powers business connectivity for organizations ranging from SMBs to global enterprises.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Ultatelultatel.comHQ: Herndon, VA, United StatesReported employees: 51-200 | Herndon, VA, United States | 51-200 | Exact match | 285 contacts → |
“Ultatel delivers a powerful yet easy-to-use cloud communications suite that scales with your business-combining voice, SMS, chat, video, online fax, and contact center…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Bluejeans By Verizonbluejeans.comHQ: San Jose, CA, United StatesReported employees: 501-1,000 | San Jose, CA, United States | 501-1,000 | Exact match | 264 contacts → |
“Please be advised that BlueJeans by Verizon is being sunset, concluding in the first half of 2024.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,155 company matches
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Unified communications providers: dataset insights
September 22, 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
1,155 records in the displayed employee bands.
0 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 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 1,155 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 22, 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 ↗
Questions about this company list
What does Exact match mean for unified communications providers?
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 unified communications providers did RevenueBase find based in the United States?
The saved snapshot records 1,155 matching company records, 68,291 tracked contacts and 20,962 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 22, 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
Unified communications providers by geography
- Unified communications providers based in Australia
- Unified communications providers based in Belgium
- Unified communications providers based in Brazil
- Unified communications providers based in Canada
- Unified communications providers based in France
- Unified communications providers based in Germany
- Unified communications providers based in India
- Unified communications providers based in Italy
- Unified communications providers based in Mexico
- Unified communications providers based in the Netherlands
- Unified communications providers based in South Africa
- Unified communications providers based in Spain
Cite this list
RevenueBase Data Team. Top 25 unified communications providers based in the United States. Snapshot: September 22, 2026. https://revenuebase.ai/companies/unified-communications-providers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Unified communications providers based in Australia
- Unified communications providers based in Belgium
- Unified communications providers based in Brazil
- Unified communications providers based in Canada
- Unified communications providers based in France
- Unified communications providers based in Germany
Company intelligence · public preview
Top 25 unified communications providers based in the United States
RevenueBase records 1,155 matching company records for unified communications providers based in the United States, with 68,291 tracked contacts and 20,962 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 22, 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 unified communications providers based in the United States
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 | AVAYAtinyurl.com HQ: Morristown, NJ, United StatesReported employees: 5,001-10,000 | Morristown, NJ, United States | 5,001-10,000 | Exact match | 10,510 contacts → |
“At Avaya, we give our customers the freedom to take their business in the directions that benefit them most.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | ZOOMzoom.com HQ: San Jose, CA, United StatesReported employees: 5,001-10,000 | San Jose, CA, United States | 5,001-10,000 | Exact match | 9,706 contacts → |
“Bring teams together, reimagine workspaces, engage new audiences, and delight your customers –– all on the Zoom AI-first work platform you know and love.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ringcentralringcentral.com HQ: Belmont, CA, United StatesReported employees: 5,001-10,000 | Belmont, CA, United States | 5,001-10,000 | Exact match | 6,431 contacts → |
“RingCentral, Inc.(NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Vonagevonage.com HQ: Holmdel, NJ, United StatesReported employees: 1,001-5,000 | Holmdel, NJ, United States | 1,001-5,000 | Exact match | 3,429 contacts → |
“We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Spectrum Businessspectrum.com HQ: Stamford, CT, United StatesReported employees: 10001+ | Stamford, CT, United States | 10001+ | Exact match | 3,044 contacts → |
“Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | TCScalltcs.com HQ: Jefferson City, MO, United StatesReported employees: Not recorded | Jefferson City, MO, United States | Not recorded | Exact match | 2,576 contacts → |
“With In-store media solutions to help you connect with your customers and grow your business, TCS delivers communication solutions that will take your business to the next level.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | GOTOgoto.com HQ: Boston, MA, United StatesReported employees: 1,001-5,000 | Boston, MA, United States | 1,001-5,000 | Exact match | 2,320 contacts → |
“As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Polycompolycom.com HQ: San Jose, CA, United StatesReported employees: 1,001-5,000 | San Jose, CA, United States | 1,001-5,000 | Exact match | 1,787 contacts → |
“Plantronics and Polycom are now Poly.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Intermedia Intelligent Communicationsintermedia.com HQ: Sunnyvale, CA, United StatesReported employees: 1,001-5,000 | Sunnyvale, CA, United States | 1,001-5,000 | Exact match | 1,254 contacts → |
“Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Integraallstream.com HQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 1,133 contacts → |
“Integra is Allstream.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Bandwidth INCbandwidth.com HQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 1,128 contacts → |
“Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Alianzaalianza.com HQ: Pleasant Grove, UT, United StatesReported employees: 501-1,000 | Pleasant Grove, UT, United States | 501-1,000 | Exact match | 606 contacts → |
“Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Momentumgomomentum.com HQ: Atlanta, GA, United StatesReported employees: 501-1,000 | Atlanta, GA, United States | 501-1,000 | Exact match | 437 contacts → |
“We unleash human momentum with collaboration, connectivity, and communications technology.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | NEW Horizon Communicationsnhcgrp.com HQ: Concord, MA, United StatesReported employees: 51-200 | Concord, MA, United States | 51-200 | Exact match | 435 contacts → |
“NHC is THE communications STACK provider™.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Fusion Connectfusionconnect.com HQ: Atlanta, GA, United StatesReported employees: 201-500 | Atlanta, GA, United States | 201-500 | Exact match | 425 contacts → |
“Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | SKYPEmicrosoft.com HQ: Redmond, WA, United StatesReported employees: 10001+ | Redmond, WA, United States | 10001+ | Exact match | 423 contacts → |
“The next generation of Skype from Microsoft gives you better ways to chat, call, and plan fun things to do with the people in your life every day.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Serenovaserenova.com HQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 401 contacts → |
“Lifesize delivers immersive communication experiences for the global enterprise.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | phone.comphone.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 398 contacts → |
“Founded in 2008 by veteran telecommunication entrepreneurs, Phone.com provides over businesses with comprehensive, flexible, and reliable cloud-based communication and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Continuantcontinuant.com HQ: Tacoma, WA, United StatesReported employees: 201-500 | Tacoma, WA, United States | 201-500 | Exact match | 366 contacts → |
“With three decades of expertise in the enterprise communications space, Continuant stands out as a seasoned Managed Services Provider, Systems Integrator, and Technology…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | ENA By Zayoena.com HQ: Nashville, TN, United StatesReported employees: 201-500 | Nashville, TN, United States | 201-500 | Exact match | 362 contacts → |
“ENA by Zayo delivers innovative technology solutions supported by exceptional customer care.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Inteliquent, A Sinch Companysinch.com HQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 327 contacts → |
“We've moved pages.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | BCM ONEbcmone.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 308 contacts → |
“Founded in 1992, BCM One is a corporate communications company that powers business connectivity for organizations ranging from SMBs to global enterprises.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Ultatelultatel.com HQ: Herndon, VA, United StatesReported employees: 51-200 | Herndon, VA, United States | 51-200 | Exact match | 285 contacts → |
“Ultatel delivers a powerful yet easy-to-use cloud communications suite that scales with your business-combining voice, SMS, chat, video, online fax, and contact center…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Bluejeans By Verizonbluejeans.com HQ: San Jose, CA, United StatesReported employees: 501-1,000 | San Jose, CA, United States | 501-1,000 | Exact match | 264 contacts → |
“Please be advised that BlueJeans by Verizon is being sunset, concluding in the first half of 2024.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,155 company matches
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Unified communications providers: dataset insights
September 22, 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
1,155 records in the displayed employee bands.
0 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 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 1,155 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 22, 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 ↗
Questions about this company list
What does Exact match mean for unified communications providers?
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 unified communications providers did RevenueBase find based in the United States?
The saved snapshot records 1,155 matching company records, 68,291 tracked contacts and 20,962 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 22, 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 unified communications providers based in the United States. Snapshot: September 22, 2026. https://revenuebase.ai/companies/unified-communications-providers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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