Company lists · Data refreshed November 2026

Top 25 Telecom operations support systems companies worldwide

RevenueBase identified 290 company matches for telecom operations support systems companies worldwide as of November 2026 and tracks 16,299 professional contacts across them, including 2,820 with verified work emails. The United States is the largest market and Bangalore the largest hub.

This list covers company matches for telecom operations support systems companies 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 telecom operations support systems companies 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
290Companies
16,299Contacts tracked
2,820Verified emails
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The 25 largest telecom operations support systems companies worldwide

Ranked by team size
Top 25 of 290 company matches for telecom operations support systems companies 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 matchEspoo, FinlandHQ recorded Nov 6, 2026501-1,0001,291 contacts →

Exact match

“Headquartered in Finland, Tecnotree Corporation was founded in 1978 and is the leading provider of full-stack Digital BSS for CSPs and DSPs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHelsinki, FinlandHQ recorded Nov 6, 2026501-1,000730 contacts →

Exact match

“Qvantel, established in 1995, is a leading provider of digital BSS and monetization software to the telecommunications and digital services industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSt Petersburg, RussiaHQ recorded Nov 6, 20261,001-5,000608 contacts →

Exact match

“Nexign is an international BSS provider with 30+ years of experience operating across 14 countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchTehran, IranHQ recorded Nov 6, 2026501-1,000454 contacts →

Exact match

“BEHSA (Behpardaz Hamrah Samaneh Aval) Corp.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchChennai, IndiaHQ recorded Nov 6, 2026201-500441 contacts →

Exact match

“ExcelaCom Technologies is an independent software vendor, offering BSS/OSS solutions and services to Tier 1 to Tier 3 NGN communications players across multiple geographies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchEsenler, TürkiyeHQ recorded Nov 6, 2026201-500428 contacts →

Exact match

“i2i Systems is an international information technology company that specializes in developing innovative ideas and solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500381 contacts →

Exact match

“Cerillion is a leading provider of BSS/OSS software for the telecommunications industry, with over 25 years’ experience supporting mobile, fixed, cable and multi-service operators…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchChennai, IndiaHQ recorded Nov 6, 2026201-500355 contacts →

Exact match

“NMSWorks Software delivers OSS and BSS solutions to some of the largest and most demanding telecom service providers, network equipment vendors and enterprises.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSaint-petersburg, RussiaHQ recorded Nov 6, 20261,001-5,000271 contacts →

Exact match

“PETER-SERVICE has been a leading developer of solutions for the telecommunications industry since 1992, specializing in the design, implementation and maintenance of OSS / BSS…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026201-500269 contacts →

Exact match

“Knot Solutions is an IT services company, with primary focus on providing solutions in the telecom domain.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMarkham, CanadaHQ recorded Nov 6, 20261,001-5,000268 contacts →

Exact match

“Enghouse Networks technology portfolio spans Business Support Systems (BSS), Operations Support Systems (OSS), Mobile Value Added Services (VAS), Network Security, Control &…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGurgaon, IndiaHQ recorded Nov 6, 20261,001-5,000227 contacts →

Exact match

“Ardom Towergen is focused on providing reliable Operations and Management Services for both Active and Passive components of the Cellular Network and specializes in providing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBlair, NE, United StatesHQ recorded Nov 6, 202651-200193 contacts →

Exact match

“Mid America Computer Corporation (MACC) offers BSS/OSS solutions designed for today's telecommunications providers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchKarachi, PakistanHQ recorded Nov 6, 2026201-500162 contacts →

Exact match

“Computer Research (Pvt) Ltd.[CRPL], established in 1989, over the years has proved services excellence in Software, Hardware and Networking domains of Telecommunication Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchCape Town, South AfricaHQ recorded Nov 6, 2026201-500151 contacts →

Exact match

“Altech ISIS, a Division of Altech Information Technologies, is owned by the Altron Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNanjing, ChinaHQ recorded Nov 6, 20261,001-5,000151 contacts →

Exact match

“ZTEsoft is a leading software provider specialized in offering end-to-end BSS/OSS solutions and services to global Telecom Operators, as well as Smart City and IoT solutions to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchRochester, NY, United StatesHQ recorded Nov 6, 202651-200147 contacts →

Exact match

“For 30 years, IDI Billing Solutions has been a trailblazer in the communications space-revolutionizing the industry through a world-class, cloud-based billing and operations…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBrussels, BelgiumHQ recorded Nov 6, 202651-200139 contacts →

Exact match

“Effortel is a leading provider of innovative OSS/BSS solutions for Communication Service Providers (CSPs).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200132 contacts →

Exact match

“Telesens is a global provider of enterprise level cost effective software products and solutions for telecom and other business domains.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMitchell, SD, United StatesHQ recorded Nov 6, 2026201-500131 contacts →

Exact match

“Innovative Systems is a mission-critical enterprise software solution that enables independent service providers to seamlessly manage their business, deliver modern network…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAhmedabad, IndiaHQ recorded Nov 6, 202651-200131 contacts →

Exact match

“Height8 Technologies is a pure OSS/BSS player which makes it a vendor friendly solution provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWarrington, United KingdomHQ recorded Nov 6, 2026201-500124 contacts →

Exact match

“MDS Global powers digital telcos for revenue growth, customer delight, and cost reduction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWarsaw, PolandHQ recorded Nov 6, 202651-200120 contacts →

Exact match

“Suntech is a leading provider of Operations and Business Support Systems (OSS/BSS) for fixed and mobile telecoms networks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchHelsinki, FinlandHQ recorded Nov 6, 2026501-1,000113 contacts →

Exact match

“On 29 June 2017 Nokia announced the successful completion of its acquisition of Comptel Corporation, a Finland-based telecommunications software company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchToronto, CanadaHQ recorded Nov 6, 202651-200107 contacts →

Exact match

“Wavelo, a division of Tucows (NASDAQ: TCX, TSX: TC), is bringing internet thinking to telecom’s toughest challenges.”

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

Showing 25 of 290 telecom operations support systems companies worldwide

See the full list, filter by size, metro and specialty, and access 2,820 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecom operations support systems companies worldwide at a glance

As of Nov 6, 2026
17.3%Verified-email coverage
56.2Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · Bangalore
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
68
11-50
108
51-200
65
201-500
29
501-1,000
9
1,001-5,000
8
5,001-10,000
1
10001+
2

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 telecom operations support systems companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “telecom operations support systems companies” 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 2,820 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.

Telecom operations support systems companies by location

2 lists · largest first

Every Telecom operations support systems companies 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 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 “telecom operations support systems companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecom operations support systems companies are there worldwide?

RevenueBase identified 290 company matches for telecom operations support systems companies 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?

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

Which country has the most telecom operations support systems companies?

The United States leads with 34 companies, followed by India (25). Every telecom operations support systems companies list by country and city is linked on this page.

Which city has the most telecom operations support systems companies?

Bangalore leads with 4 company records, followed by Copenhagen (4) and London (4).

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 2,820 professional contacts with verified work emails tracked across these 290 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.

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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.