Company lists · Data refreshed September 2026

Top 25 Customer agencies worldwide

Name: Customer agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 12,899 companies tracked

RevenueBase identified 12,899 company matches for customer agencies worldwide as of September 2026 and tracks 1,073,631 professional contacts across them, including 114,563 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for customer agencies 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 September 21, 2026. Country and city lists for customer agencies 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 Sep 21, 2026 How this list was built

12,899Companies

1,073,631Contacts tracked

114,563Verified emails

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The 25 largest customer agencies worldwide

Ranked by team size

Top 25 of 12,899 company matches for customer agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Atento	Exact match	Madrid, MexicoHQ recorded Sep 21, 2026	10001+	77,129 contacts →
	Exact match “We are one of the world's largest global providers of customer relationship management and business transformation outsourcing (CRM/BTO) services and industry leaders in Latin…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Alorica	Exact match	Irvine, CA, United StatesHQ recorded Sep 21, 2026	10001+	47,558 contacts →
	Exact match “We’re passionate about creating customers for life by designing experiences that elevate your brand.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Sitel Group	Exact match	Miami, FL, United StatesHQ recorded Sep 21, 2026	10001+	35,365 contacts →
	Exact match “Foundever™ is a global leader in the customer experience (CX) industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	TTEC	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	10001+	26,420 contacts →
	Exact match “We’re TTEC (pronounced t.tec).” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Konecta	Exact match	Madrid, SpainHQ recorded Sep 21, 2026	10001+	23,763 contacts →
	Exact match “Konecta is a leading innovative global service provider in customer management business process outsourcing, with passionate employees working in 40 languages across 4 continents…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	AEC	Exact match	Belo Horizonte, BrazilHQ recorded Sep 21, 2026	10001+	20,095 contacts →
	Exact match “A AeC é apontada consistentemente como a líder brasileira na entrega de soluções de experiência do cliente e gestão de processos terceirizados.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	IQOR	Exact match	Fort Lauderdale, FL, United StatesHQ recorded Sep 21, 2026	10001+	17,310 contacts →
	Exact match “iQor is a trusted partner in customer experience solutions for global brands and a portfolio company of Mill Point Capital.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	IBEX	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	10001+	15,457 contacts →
	Exact match “ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Startek	Exact match	Denver, United StatesHQ recorded Sep 21, 2026	10001+	14,976 contacts →
	Exact match “A global customer experience (CX) management solutions provider, Startek® delivers best-in-class omnichannel CX, digital transformation and enterprise tech services for leading…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Ienergizer	Exact match	Noida, IndiaHQ recorded Sep 21, 2026	10001+	14,745 contacts →
	Exact match “iEnergizer is a leading Business Process Outsourcing provider (“BPO”) of customer management solutions dedicated to delivering performance while actively supporting and advocating…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	VXI Global Solutions	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 21, 2026	10001+	14,238 contacts →
	Exact match “About VXI Global Solutions VXI Global Solutions is a BPO leader in customer service, customer experience, and digital solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Intelcia	Exact match	Casablanca, MoroccoHQ recorded Sep 21, 2026	10001+	13,214 contacts →
	Exact match “Intelcia is a global player in outsourcing, which has supported its clients for 20 years combining talents, technologies, and processes to offer a tailor-made service and skills…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Transcom	Exact match	Stockholm, SwedenHQ recorded Sep 21, 2026	10001+	12,955 contacts →
	Exact match “Transcom provides digitally enhanced customer experience (CX) services to some of the world's most ambitious brands.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Slalom	Exact match	Seattle, WA, United StatesHQ recorded Sep 21, 2026	10001+	10,032 contacts →
	Exact match “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Comdata Group	Exact match	Corsico, ItalyHQ recorded Sep 21, 2026	10001+	9,614 contacts →
	Exact match “We're KONECTA now!” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Intouchcx	Exact match	Winnipeg, MB, CanadaHQ recorded Sep 21, 2026	10001+	8,992 contacts →
	Exact match “We are IntouchCX, where innovation meets industry, where dreamers meet doers, and where scale meets soul.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Algar Tech	Exact match	Uberlândia, BrazilHQ recorded Sep 21, 2026	5,001-10,000	8,292 contacts →
	Exact match “Somos a Algar Tech CX.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Cogent E Services	Exact match	Noida, IndiaHQ recorded Sep 21, 2026	10001+	7,313 contacts →
	Exact match “We are an end-to-end Customer Experience (CX) solutions provider offering omni-channel solutions along various customer interaction touch-points from customer sales and support…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Turkcell Global Bilgi	Exact match	Beyoglu, TürkiyeHQ recorded Sep 21, 2026	10001+	6,167 contacts →
	Exact match “Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Everise	Exact match	Plantation, FL, United StatesHQ recorded Sep 21, 2026	10001+	5,863 contacts →
	Exact match “Everise delivers happiness to millions of customers around the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Qualfon	Exact match	Highland Park, MI, United StatesHQ recorded Sep 21, 2026	10001+	5,840 contacts →
	Exact match “Qualfon provides 360 degrees of customer experience support for your business with mission-driven processes that keep each person at the heart of every interaction.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Afni, INC	Exact match	Bloomington, IL, United StatesHQ recorded Sep 21, 2026	10001+	5,553 contacts →
	Exact match “When people reach for their phones, use laptops, or grab their tablets, Afni's contact center teams are there to provide prompt and friendly help.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Emtelco S.A	Exact match	Medellín, ColombiaHQ recorded Sep 21, 2026	10001+	4,998 contacts →
	Exact match “Maximizamos el valor de cada contacto de las empresas con sus clientes, gestionando los procesos de relacionamiento a través de canales tefónicos, virtuales y presenciales.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Fusion CX	Exact match	Norcross, GA, United StatesHQ recorded Sep 21, 2026	10001+	4,785 contacts →
	Exact match “At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Eficacia	Exact match	Cali, ColombiaHQ recorded Sep 21, 2026	10001+	4,692 contacts →
	Exact match “Incrementamos la productividad y eficiencia de nuestros clientes- Más de 40 años de experiencia en el mercado- Líderes en Soluciones de Mercadeo, Trade Marketing, Ventas y Gestión…” Recorded in the RevenueBase company graph · Sep 21, 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 “customer agencies”. 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 12,899 customer agencies worldwide

See the full list, filter by size, metro and specialty, and access 114,563 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Customer agencies worldwide at a glance

As of Sep 21, 2026

10.7%Verified-email coverage

83.2Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Sao Paulo

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

4,593

11-50

3,839

51-200

2,359

201-500

937

501-1,000

430

1,001-5,000

467

5,001-10,000

106

10001+

140

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 customer agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “customer agencies” 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 114,563 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 21, 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.

Customer agencies by location

68 lists · largest first

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

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “customer agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer agencies are there worldwide?

RevenueBase identified 12,899 company matches for customer agencies worldwide 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?

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

Which country has the most customer agencies?

The United States leads with 2,539 companies, followed by India (951) and Brazil (597). Every customer agencies list by country and city is linked on this page.

Which city has the most customer agencies?

Sao Paulo leads with 210 company records, followed by London (200) and Lahore (178).

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 114,563 professional contacts with verified work emails tracked across these 12,899 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 21, 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.