Company lists · Data verified August 2026

Top 10 Cold calling agencies based in Belgium

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 32 companies tracked

There are 32 cold calling agencies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 442 professional contacts across them, including 25 with verified work emails and 8 with mobile numbers. Genk is the largest hub.

This list covers cold calling agencies headquartered in Belgium, 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.

32Companies

442Contacts tracked

25Verified emails

8Mobile numbers

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The 10 largest cold calling agencies based in Belgium

Ranked by team size

Top 10 of 32 cold calling agencies based in Belgium, 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	Granton Marketing BV	Aartselaar	51-200	136	4
2	IP Globalnet	Zaventem	1,001-5,000	90	1
3	Telmacom Telemarketing	Willebroek	11-50	19	4
4	Multicom Europe	n/a	51-200	17	2
5	Yello Telemarketing	Kortrijk	1-10	7	4
6	Sebeco	Gentbrugge	11-50	6	1
7	DE Commerce BV	n/a	1-10	4	3
8	Passion Sales	Brussels	11-50	4	1
9	Q-Calls	Kumtich	11-50	3	2
10	Opptylead	Wavre	1-10	1	1

Showing 10 of 32 cold calling agencies based in Belgium

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Cold calling agencies based in Belgium at a glance

As of Aug 28, 2026

11-50Median size (employees)

GenkLargest hub · 2 HQs

8Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

1,001-5,000

Cold calling agencies by metro

Metro	Companies
Cold calling agencies in Genk	2
Cold calling agencies in Willebroek	2
Cold calling agencies in Sint Niklaas	1
Cold calling agencies in Ghent	1
Cold calling agencies in Sint-Stevens-Woluwe	1
Cold calling agencies in Gent	1
Cold calling agencies in Mechelen	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 Belgium.
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; 0 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 Belgium?

There are 32 cold calling agencies headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

Granton Marketing BV, headquartered in Aartselaar, tops this list with the largest team on record.

Which city has the most cold calling agencies?

Genk leads with 2 headquartered companies, followed by Willebroek (2) and Sint Niklaas (1).

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 25 verified decision-maker contacts tracked across these 32 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.