Company lists · Data verified August 2026

Top 10 Cold calling agencies based in Poland

Name: Cold calling agencies based in Poland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 38 companies tracked

There are 38 cold calling agencies headquartered in Poland (RevenueBase, August 2026). RevenueBase tracks 579 professional contacts across them, including 51 with verified work emails and 11 with mobile numbers. Warszawa is the largest hub.

This list covers cold calling agencies headquartered in Poland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

38Companies

579Contacts tracked

51Verified emails

11Mobile numbers

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The 10 largest cold calling agencies based in Poland

Ranked by team size

Top 10 of 38 cold calling agencies based in Poland, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Instream Group	Poznan	11-50	63	12
2	Lockus Sp. Z O.O	Krakow	201-500	41	15
3	Multi Contact Center	Krakow	51-200	25	2
4	Tresconnect	Poznan	11-50	15	8
5	Great Call Sp. Z O.O. S.K.A	Bydgoszcz	201-500	10	1
6	Call Center House	Lodz	51-200	10	1
7	Hotlead.Pl	Poznan	11-50	8	1
8	ICS Center	Bialystok	201-500	7	6
9	Open Rate	Poznan	1-10	7	4
10	Lead GEN B2B Sellstorm	Katowice	1-10	4	1

Showing 10 of 38 cold calling agencies based in Poland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 51 reachable decision-makers.

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Cold calling agencies based in Poland at a glance

As of Aug 28, 2026

11-50Median size (employees)

WarszawaLargest hub · 6 HQs

11Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Cold calling agencies by metro

Metro	Companies
Cold calling agencies in Warszawa	6
Cold calling agencies in Warsaw	5
Cold calling agencies in Poznan	4
Cold calling agencies in Krakow	4
Cold calling agencies in Torun	2
Cold calling agencies in Lodz	2
Cold calling agencies in Rzeszow	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cold calling agencies”, with match quality audited by blind human judging, and headquartered in Poland.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cold calling agencies are there based in Poland?

There are 38 cold calling agencies headquartered in Poland as of August 2026 (RevenueBase).

What is the largest company on this list?

Instream Group, headquartered in Poznan, tops this list with the largest team on record.

Which city has the most cold calling agencies?

Warszawa leads with 6 headquartered companies, followed by Warsaw (5) and Poznan (4).

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 51 verified decision-maker contacts tracked across these 38 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.