Company lists · Data refreshed September 2026

Top 25 Seasonal call center services worldwide

RevenueBase identified 1,563 company matches for seasonal call center services worldwide as of September 2026 and tracks 60,121 professional contacts across them, including 3,369 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers company matches for seasonal call center services 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 29, 2026. Country and city lists for seasonal call center services 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 29, 2026 How this list was built
1,563Companies
60,121Contacts tracked
3,369Verified emails
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The 25 largest seasonal call center services worldwide

Ranked by team size
Top 25 of 1,563 company matches for seasonal call center services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchSao Paulo, BrazilHQ recorded Sep 29, 202610001+3,914 contacts →

Exact match

“Vikstar is one of the biggest contact centers of Brazil.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchDallas, TX, United StatesHQ recorded Sep 29, 20261,001-5,0003,122 contacts →

Exact match

“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchBerwyn, PA, United StatesHQ recorded Sep 29, 20265,001-10,0002,774 contacts →

Exact match

“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchBoca Raton, FL, United StatesHQ recorded Sep 29, 20265,001-10,0001,741 contacts →

Exact match

“Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchWaco, TX, United StatesHQ recorded Sep 29, 20265,001-10,0001,710 contacts →

Exact match

“Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 29, 20261,001-5,0001,473 contacts →

Exact match

“Senture provides comprehensive contact center service support nationally.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchSt Petersburg, FL, RussiaHQ recorded Sep 29, 20261,001-5,0001,198 contacts →

Exact match

“The Office Gurus (TOG) is a global call center and business process outsource provider of customer care, telemarketing, lead generation, appointment setting, order entry, accounts…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchHorsham, PA, United StatesHQ recorded Sep 29, 2026501-1,000883 contacts →

Exact match

“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!”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchBethlehem, United StatesHQ recorded Sep 29, 20261,001-5,000758 contacts →

Exact match

“Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchProvidencia, ChileHQ recorded Sep 29, 20261,001-5,000623 contacts →

Exact match

“Impulsamos el éxito de nuestros clientes a través de soluciones personalizadas en Contact Center y experiencia al cliente.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchCórdoba, ArgentinaHQ recorded Sep 29, 20261,001-5,000572 contacts →

Exact match

“Empresa dedicada a prestar servicios de Contact Center a terceros.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchSan Marcos, TX, United StatesHQ recorded Sep 29, 20261,001-5,000562 contacts →

Exact match

“teleNetwork is a leading provider of outsourced customer service, technical support, and sales enablement solutions for technology products and services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchSalisbury, NC, United StatesHQ recorded Sep 29, 2026501-1,000542 contacts →

Exact match

“We are customer service experts.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchColumbus, OH, United StatesHQ recorded Sep 29, 20261,001-5,000515 contacts →

Exact match

“ContactUs Communications is a U.S.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchNoida, IndiaHQ recorded Sep 29, 20265,001-10,000467 contacts →

Exact match

“DigiTech is one of the fastest growing Outsourcing & Offsourcing company in Delhi/NCR.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchSanto Domingo, Dominican RepublicHQ recorded Sep 29, 20265,001-10,000459 contacts →

Exact match

“In 2006, Advensus embarked on its journey in the Dominican Republic, initially known as Nearshore, with a modest 100 telemarketing positions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,000454 contacts →

Exact match

“SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention |…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchCairo, EgyptHQ recorded Sep 29, 20261,001-5,000447 contacts →

Exact match

“Proper Business solutions is offering a comprehensive suite of customer care call center services, outbound and lead generation, back-office and data processing solutions to…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchSantiago, ChileHQ recorded Sep 29, 20261,001-5,000425 contacts →

Exact match

“Nuestros servicios contribuyen al desarrollo de negocios más rentables, ya que poseemos la experiencia y tecnología que nos permite trabajar en el descubrimiento de nuevas…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchFort Worth, TX, United StatesHQ recorded Sep 29, 2026501-1,000393 contacts →

Exact match

“Touchstone Communications was built in 2002 on the philosophy of hiring educated, motivated talent and then providing them with the best training and management to achieve our…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchLuanda, AngolaHQ recorded Sep 29, 2026501-1,000390 contacts →

Exact match

“Com base na necessidade em oferecer serviços especializados e de qualidade através de contactos telefónicos, surgiu a Solução Contact Center, a mais moderna plataforma de contact…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchBloomington, MN, United StatesHQ recorded Sep 29, 20261,001-5,000354 contacts →

Exact match

“For over 35 years, The Connection has made a name for ourselves becoming one of the top industry partners to Fortune 500 companies looking to outsource their contact center…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchIowa City, United StatesHQ recorded Sep 29, 20261,001-5,000346 contacts →

Exact match

“As a distinguished global leader in call center outsourcing, OnBrand24 takes pride in its 30-year legacy of delivering exceptional inbound and outbound call center services across…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchBenito Juárez, MexicoHQ recorded Sep 29, 20261,001-5,000338 contacts →

Exact match

“29 años de experiencia brindando soluciones integrales de contact center que superen las expectativas de nuestros clientes, a través de un equipo altamente capacitado, tecnología…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchTunis, TunisiaHQ recorded Sep 29, 2026501-1,000338 contacts →

Exact match

“With more than 900 employees, PhoneAct is an ISO 9001/2008 certified offshore call center service provider.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 1,563 seasonal call center services worldwide

See the full list, filter by size, metro and specialty, and access 3,369 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Seasonal call center services worldwide at a glance

As of Sep 29, 2026
5.6%Verified-email coverage
38.5Average contacts per company
51-200Median size (employees)
2.4%Largest-city concentration · Lahore
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
210
11-50
518
51-200
484
201-500
171
501-1,000
99
1,001-5,000
60
5,001-10,000
12
10001+
4

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 seasonal call center services are linked below.
What qualifies
Company records worldwide whose business descriptions match “seasonal call center services” 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 3,369 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 29, 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.

Seasonal call center services by location

7 lists · largest first

Every Seasonal call center services 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 “seasonal call center services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many seasonal call center services are there worldwide?

RevenueBase identified 1,563 company matches for seasonal call center services 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?

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

Which country has the most seasonal call center services?

The United States leads with 276 companies, followed by India (114) and the Philippines (53). Every seasonal call center services list by country and city is linked on this page.

Which city has the most seasonal call center services?

Lahore leads with 38 company records, followed by Rawalpindi (28) and London (16).

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 3,369 professional contacts with verified work emails tracked across these 1,563 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 29, 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.