Company lists · Data verified August 2026

Top 20 Ad tech consulting firms based in Estonia

Name: Ad tech consulting firms based in Estonia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 51 companies tracked

There are 51 ad tech consulting firms headquartered in Estonia (RevenueBase, August 2026). RevenueBase tracks 350 professional contacts across them, including 79 with verified work emails and 9 with mobile numbers. Tallinn is the largest hub.

This list covers ad tech consulting firms headquartered in Estonia, 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.

51Companies

350Contacts tracked

79Verified emails

9Mobile numbers

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The 20 largest ad tech consulting firms based in Estonia

Ranked by team size

Top 20 of 51 ad tech consulting firms based in Estonia, 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	Cognitive AI SRL	Tallin	11-50	31	19
2	Attekmi	Tallinn	11-50	29	11
3	Holini	Tallinn	11-50	17	10
4	HÄK Agency	Tallinn	11-50	14	1
5	Daniliants Ventures	Tallinn	11-50	13	3
6	ALL Media Digital	Tallinn	11-50	13	2
7	Hireload	Tallinn	11-50	11	1
8	Performlabs Agency	Talinn	11-50	9	2
9	Mesh ADS	Tallinn	11-50	8	8
10	X5agency	n/a	11-50	7	2
11	Klewer Marketing Agency	Kristiine	1-10	6	3
12	Reklaamiagentuur Geeks	Kristiine	1-10	6	3
13	Adhit Media	Tallinn	1-10	5	2
14	ZEZZ	Tallinn	1-10	5	1
15	Nord Creative WEB & Advertising Agency	Tallinn	11-50	4	1
16	Attribution Digital Attd	Tallinn	1-10	3	2
17	Keston Digital Advertising	Tallinn	1-10	3	2
18	Dustfork	Tallinn	1-10	2	2
19	Artemis Data Consulting	Tallinn	1-10	2	2
20	based.marketing	Tallinn	1-10	2	2

Showing 20 of 51 ad tech consulting firms based in Estonia

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Ad tech consulting firms based in Estonia at a glance

As of Aug 28, 2026

1-10Median size (employees)

TallinnLargest hub · 41 HQs

9Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Ad tech consulting firms by metro

Metro	Companies
Ad tech consulting firms in Tallinn	41
Ad tech consulting firms in Tallin	3
Ad tech consulting firms in Kristiine	2
Ad tech consulting firms in Lasnamae	1
Ad tech consulting firms in Narva Linn	1
Ad tech consulting firms in Talinn	1
Ad tech consulting firms in Kuusalu Vald	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 “ad tech consulting firms”, with match quality audited by blind human judging, and headquartered in Estonia.
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 ad tech consulting firms are there based in Estonia?

There are 51 ad tech consulting firms headquartered in Estonia as of August 2026 (RevenueBase).

What is the largest company on this list?

Cognitive AI SRL, headquartered in Tallin, tops this list with the largest team on record.

Which city has the most ad tech consulting firms?

Tallinn leads with 41 headquartered companies, followed by Tallin (3) and Kristiine (2).

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 79 verified decision-maker contacts tracked across these 51 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.