Company lists · Data refreshed September 2026
Top 25 Contact center migration consultants worldwide
RevenueBase identified 1,041 contact center migration consultants worldwide as of September 2026 and tracks 20,909 professional contacts across them, including 3,234 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers contact center migration consultants 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 27, 2026. Country and city lists for contact center migration consultants 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.
The 25 largest contact center migration consultants worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,306 contacts → | ||||
Indirect evidence “At Unisono, for more than 20 years we have been working side by side with our customers across the globe to meet their demands as well as our own.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 883 contacts → | ||||
Indirect evidence “If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 701 contacts → | ||||
Strong evidence “A VECTOR SERVIÇOS é uma empresa especializada na criação, implantação e gestão de serviços de Contact Center.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 690 contacts → | ||||
Strong evidence “We are dedicated to develop competitive advantages for our clients through specialized advice and implementation of innovative telecommunication solutions and Contact Center.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 518 contacts → | ||||
Indirect evidence “A DDS é uma empresa de tecnologia especializada na integração de sistemas.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 500 contacts → | ||||
Partial evidence “Transcosmos Malaysia offer integrated call center services such as Call Center, Social Media Management, Voice Of Customer Analysis, Digital Marketing and eCommerce Solution that…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 474 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 436 contacts → | ||||
Strong evidence “Outsourcing de serviços de contact center, com atendimento multicanal.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 404 contacts → | ||||
Strong evidence “Criada em 1992, a TELLUS é uma empresa com vasta experiência, prestadora de serviços técnicos especializados e integração de soluções de Contact Center, Tecnologias da Informação…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 395 contacts → | ||||
Strong evidence “Tersea est le premier opérateur de centre de contact qui propose une solution originale et innovante et qui met tout son savoir faire à disposition de ses clients.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 355 contacts → | ||||
Strong evidence “iKanbi is a Contact Center specialized in advising, developing and managing the remote customer services of any brand.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 348 contacts → | ||||
Indirect evidence “CSInfocomm: Elevating Customer Experience, Redefining Solutions CSInfocomm is a dynamic Solution Provider renowned for elevating customer experience through innovative solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 332 contacts → | ||||
Indirect evidence “The SmartConnect!” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 315 contacts → | ||||
Strong evidence “EchoCCS operational and strategic consultancy services such as call center and business process outsourcing services (Call Center Outsourcing, BPO), advanced call center…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 264 contacts → | ||||
Indirect evidence “ExpertCallers (a division of Flatworld Solutions) is a global consulting and outsourcing company, with a wealth of experience in providing operational and strategic excellence to…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 234 contacts → | ||||
Strong evidence “ConSol Limited (Consol) is the leading provider of Contact Centre Services, Consultancy Services & Enterprise Solutions in Nigeria.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 216 contacts → | ||||
Strong evidence “Schedule your FREE Consultation here: http://bit.ly/2gUckQb Anomaly Squared is a contact center services provider.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 207 contacts → | ||||
Indirect evidence “At DGLiger, we are architects of transformation, dedicated to enabling organizations to thrive through the development of strong business and technology infrastructures.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 192 contacts → | ||||
Strong evidence “Migrating a contact center to the cloud can seem a strenuous task.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 157 contacts → | ||||
Indirect evidence “PTP is a consulting firm wholly focused on helping organizations deliver strategic customer experience solutions that drive revenue.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 152 contacts → | ||||
Strong evidence “At KECH, our objective is to bring expertise, innovation, and improved productivity into every facet of a successful contact center and service desk operation.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 152 contacts → | ||||
Strong evidence “We provide comprehensive solutions for the improvement of contact center operations, customer service and collections, with VoIP telephony, CRM, Speech Analytics, omnichannel…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 149 contacts → | ||||
Partial evidence “Callpoint bietet Schweizer Call Center Services in den Bereichen Customer Service, Pikettdienst, Helpdesk und Telemarketing an – vor allem für grössere Unternehmen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 138 contacts → | ||||
Indirect evidence “Dharani Info Technologies is an information technology and services company based out of Guntur, AndhraPradesh, INDIA.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 137 contacts → | ||||
Indirect evidence “Our goal is to build a solid and respectable company offering comprehensive services and IT products.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
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: contact center migration consultants. 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 contact center migration consultants.
- Partial evidence
- Its own public description names part of contact center migration consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name contact center migration consultants. 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 1,041 contact center migration consultants worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 3,234 reachable decision-makers.
Free signup · no credit card
Contact center migration consultants worldwide at a glance
As of Sep 27, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 contact center migration consultants, 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
- Every country. Country and city lists for contact center migration consultants are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “contact center migration consultants”. 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 contact center migration consultants), 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 contact center migration consultants, 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, 3,234 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 27, 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.
Contact center migration consultants by location
7 lists · largest firstEvery Contact center migration consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Contact center migration consultants based in the United States265
- Contact center migration consultants based in the United Kingdom60
- Contact center migration consultants based in India44
- Contact center migration consultants based in Canada40
- Contact center migration consultants based in Brazil37
- Contact center migration consultants based in Australia27
- Contact center migration consultants based in the Netherlands26
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 contact center migration consultants, 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 contact center migration consultants are there worldwide?
RevenueBase identified 1,041 contact center migration consultants 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?
Grupo Unísono, headquartered in Madrid, tops this list with the largest team on record.
Which country has the most contact center migration consultants?
The United States leads with 265 companies, followed by the United Kingdom (60) and India (44). Every contact center migration consultants list by country and city is linked on this page.
Which city has the most contact center migration consultants?
Sao Paulo leads with 17 headquartered companies, followed by London (15) and Chicago (10).
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 3,234 verified decision-maker contacts tracked across these 1,041 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 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,041 contact center migration consultants worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.