Company lists · Data verified August 2026

Top 12 Ad tech consulting firms based in Oslo, Norway

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 27 companies tracked

There are 27 ad tech consulting firms headquartered in Oslo, Norway (RevenueBase, August 2026). RevenueBase tracks 153 professional contacts across them, including 29 with verified work emails and 7 with mobile numbers. Oslo is the largest hub.

This list covers ad tech consulting firms headquartered in Oslo, Norway, 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.

27Companies

153Contacts tracked

29Verified emails

7Mobile numbers

Unlock all 27 companies Free account · no credit card · 2 minutes

The 12 largest ad tech consulting firms based in Oslo, Norway

Ranked by team size

Top 12 of 27 ad tech consulting firms based in Oslo, Norway, 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	Idium 1881 AS	Oslo	11-50	26	1
2	Amidays	Oslo	11-50	17	11
3	Diar AS	Oslo	1-10	8	4
4	Zeppelin	Oslo	11-50	4	2
5	Momentum Performance AS	Oslo	1-10	4	1
6	Reprise Digital Norway	Oslo	11-50	3	2
7	Make Consult AS	Oslo	1-10	3	1
8	Effekt Media AS	Oslo	1-10	2	2
9	Anadigme	Oslo	1-10	2	2
10	VIVA	Oslo	11-50	2	1
11	Cyntmedia	Oslo	1-10	2	1
12	Meso Digital AS	Oslo	1-10	1	1

Showing 12 of 27 ad tech consulting firms based in Oslo, Norway

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 29 reachable decision-makers.

Free account · no credit card

See all 27 companies

Ad tech consulting firms based in Oslo, Norway at a glance

As of Aug 28, 2026

1-10Median size (employees)

OsloLargest hub · 27 HQs

7Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Ad tech consulting firms by metro in Norway

Metro	Companies
Ad tech consulting firms in Oslo	27
Ad tech consulting firms in Lillestrom	2
Ad tech consulting firms in Stavanger	2
Ad tech consulting firms in Bergen	1
Ad tech consulting firms in Fredrikstad Viken	1
Ad tech consulting firms in Solbergelva	1
Ad tech consulting firms in Nittedal	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 Oslo, Norway.
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 ad tech consulting firms are there based in Oslo, Norway?

There are 27 ad tech consulting firms headquartered in Oslo, Norway as of August 2026 (RevenueBase).

What is the largest company on this list?

Idium 1881 AS, headquartered in Oslo, tops this list with the largest team on record.

Which city has the most ad tech consulting firms?

Oslo leads with 27 headquartered companies, followed by Lillestrom (2) and Stavanger (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 29 verified decision-maker contacts tracked across these 27 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.

Ready to reach these companies? Verified emails and direct dials for all 27 ad tech consulting firms based in Oslo, Norway. Start with a free account, no credit card.

Get the full list

Related lists

Ad tech consulting firms by geography

Browse the directory

Browse: Companies home · Ad tech consulting firms in Norway · All Norway lists · All Ad tech consulting firms lists · New lists

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.