Company lists · Data refreshed November 2026

Top 25 Customer service outsourcing advisors worldwide

Name: Customer service outsourcing advisors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 20,306 companies tracked

RevenueBase identified 20,306 company matches for customer service outsourcing advisors worldwide as of November 2026 and tracks 1,121,787 professional contacts across them, including 106,767 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers company matches for customer service outsourcing advisors 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 5, 2026. Country and city lists for customer service outsourcing advisors 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 5, 2026 How this list was built

20,306Companies

1,121,787Contacts tracked

106,767Verified emails

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The 25 largest customer service outsourcing advisors worldwide

Ranked by team size

Top 25 of 20,306 company matches for customer service outsourcing advisors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 Nov 5, 2026	10001+	88,799 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 · Nov 5, 2026 · View company records in RevenueBase
2	Alorica	Exact match	Irvine, CA, United StatesHQ recorded Nov 5, 2026	10001+	56,404 contacts →
	Exact match “We’re passionate about creating customers for life by designing experiences that elevate your brand.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	TTEC	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	10001+	30,312 contacts →
	Exact match “We’re TTEC (pronounced t.tec).” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Konecta	Exact match	Madrid, SpainHQ recorded Nov 5, 2026	10001+	28,482 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 · Nov 5, 2026 · View company records in RevenueBase
5	Capita	Exact match	London, United KingdomHQ recorded Nov 5, 2026	10001+	22,725 contacts →
	Exact match “Capita is an AI-enabled business services partner.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	AEC	Exact match	Belo Horizonte, BrazilHQ recorded Nov 5, 2026	10001+	22,678 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 · Nov 5, 2026 · View company records in RevenueBase
7	IBEX	Exact match	Washington, DC, United StatesHQ recorded Nov 5, 2026	10001+	17,868 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 · Nov 5, 2026 · View company records in RevenueBase
8	VXI Global Solutions	Exact match	Los Angeles, United StatesHQ recorded Nov 5, 2026	10001+	17,251 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 · Nov 5, 2026 · View company records in RevenueBase
9	Ienergizer	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	10001+	15,893 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 · Nov 5, 2026 · View company records in RevenueBase
10	Intelcia	Exact match	Casablanca, MoroccoHQ recorded Nov 5, 2026	10001+	14,607 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 · Nov 5, 2026 · View company records in RevenueBase
11	Comdata Group	Exact match	Corsico, ItalyHQ recorded Nov 5, 2026	10001+	10,448 contacts →
	Exact match “We're KONECTA now!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Everise	Exact match	Plantation, United StatesHQ recorded Nov 5, 2026	10001+	6,919 contacts →
	Exact match “Everise delivers happiness to millions of customers around the world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Turkcell Global Bilgi	Exact match	Beyoglu, TürkiyeHQ recorded Nov 5, 2026	10001+	6,889 contacts →
	Exact match “Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	CCI Global	Exact match	Durban, South AfricaHQ recorded Nov 5, 2026	10001+	6,695 contacts →
	Exact match “CCI Global is a distinguished leader in the Business Process Outsourcing (BPO) industry in Africa- Headquartered in the UAE, CCI is renowned for exceptional services across a…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Emtelco S.A	Exact match	Medellín, ColombiaHQ recorded Nov 5, 2026	10001+	6,207 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 · Nov 5, 2026 · View company records in RevenueBase
16	Eficacia	Exact match	Cali, ColombiaHQ recorded Nov 5, 2026	10001+	5,573 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 · Nov 5, 2026 · View company records in RevenueBase
17	Callink	Exact match	Uberlândia, BrazilHQ recorded Nov 5, 2026	5,001-10,000	4,874 contacts →
	Exact match “Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Apex America	Exact match	Córdoba, ArgentinaHQ recorded Nov 5, 2026	10001+	4,849 contacts →
	Exact match “At Apex America, we are a Next Generation BPO and a global strategic partner specialized in elevating customer service standards.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Continuum Global Solutions	Exact match	Dallas, TX, United StatesHQ recorded Nov 5, 2026	5,001-10,000	4,798 contacts →
	Exact match “With a fresh name and decades of contact center expertise, we’re dedicated to collaborative partnerships, understanding your unique needs, and tailoring solutions for an enhanced…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Paschoalotto	Exact match	Bauru, BrazilHQ recorded Nov 5, 2026	10001+	4,738 contacts →
	Exact match “Somos um ecossistema de soluções em outsourcing, especialistas em cobrança e atendimento.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Ibex. Pakistan	Exact match	Karachi, PakistanHQ recorded Nov 5, 2026	10001+	4,555 contacts →
	Exact match “ibex.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Harte Hanks	Exact match	Chelmsford, MA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	4,400 contacts →
	Exact match “We are The Customer Company®, a global leader in Customer Experience (CX), Omnichannel Marketing, Data Services, Customer Care, Fulfillment, and Logistics.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	GSS Global Sales Solutions	Exact match	Madrid, SpainHQ recorded Nov 5, 2026	10001+	4,355 contacts →
	Exact match “is a tech company specialized in providing, and for.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Raya CX	Exact match	Giza, EgyptHQ recorded Nov 5, 2026	5,001-10,000	4,129 contacts →
	Exact match “RAYA Customer Experience provides next-generation BPO and customer experience management on behalf of clients across various industries.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	EPX Eperformax Contact Centers	Exact match	Pasay City, PhilippinesHQ recorded Nov 5, 2026	5,001-10,000	3,904 contacts →
	Exact match “ePerformax is a high-performing contact center & BPO that provides world-class, omnichannel service and support to a select group of Fortune companies and their customers.” Recorded in the RevenueBase company graph · Nov 5, 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 service outsourcing advisors”. 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 20,306 customer service outsourcing advisors worldwide

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Customer service outsourcing advisors worldwide at a glance

As of Nov 5, 2026

9.5%Verified-email coverage

55.2Average contacts per company

11-50Median size (employees)

1.8%Largest-city concentration · Lahore

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

6,389

11-50

6,613

51-200

4,074

201-500

1,569

501-1,000

693

1,001-5,000

616

5,001-10,000

136

10001+

114

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 service outsourcing advisors are linked below.
What qualifies: Company records worldwide whose business descriptions match “customer service outsourcing advisors” 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 106,767 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 5, 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 service outsourcing advisors by location

150 lists · largest first

Every Customer service outsourcing advisors 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 service outsourcing advisors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer service outsourcing advisors are there worldwide?

RevenueBase identified 20,306 company matches for customer service outsourcing advisors 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?

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

Which country has the most customer service outsourcing advisors?

The United States leads with 2,845 companies, followed by India (2,408) and Brazil (996). Every customer service outsourcing advisors list by country and city is linked on this page.

Which city has the most customer service outsourcing advisors?

Lahore leads with 356 company records, followed by London (275) and Sao Paulo (271).

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 106,767 professional contacts with verified work emails tracked across these 20,306 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 5, 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.