Company lists · Data refreshed September 2026

Top 25 Account-based advertising firms worldwide

Name: Account-based advertising firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 7,501 companies tracked

RevenueBase identified 7,501 account-based advertising firms worldwide as of September 2026 and tracks 116,727 professional contacts across them, including 38,369 with verified work emails. The United States is the largest market and London the largest hub.

This list covers account-based advertising firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026. Country and city lists for account-based advertising firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

7,501Companies

116,727Contacts tracked

38,369Verified emails

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The 25 largest account-based advertising firms worldwide

Ranked by team size

Top 25 of 7,501 account-based advertising firms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to account-based advertising firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Epsilon	Indirect evidence	Irving, TX, United StatesHQ checked Sep 27, 2026	5,001-10,000	9,953 contacts →
	Indirect evidence “Epsilon is a global leader in data and identity with deep expertise in digital media, clean rooms, customer data platforms, loyalty and marketing services.” Source: RevenueBase Database · checked Sep 27, 2026
2	The Trade Desk	Indirect evidence	Ventura, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	4,307 contacts →
	Indirect evidence “It's more than just clicks.” Source: RevenueBase Database · checked Sep 27, 2026
3	Zoominfo	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 27, 2026	1,001-5,000	4,029 contacts →
	Indirect evidence “ZoomInfo (NASDAQ: GTM) is the go-to-market platform that helps businesses find, acquire and grow their customers.” Source: RevenueBase Database · checked Sep 27, 2026
4	media.net	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 27, 2026	1,001-5,000	2,011 contacts →
	Partial evidence “Media.net is an independent advertising technology platform that helps publishers, advertisers, and agencies achieve measurable outcomes across all formats and mediums.” Source: RevenueBase Database · checked Sep 27, 2026
5	Taboola	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,979 contacts →
	Partial evidence “Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Source: RevenueBase Database · checked Sep 27, 2026
6	TEADS	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,789 contacts →
	Partial evidence “Teads Holding Co.(“Teads”)(Nasdaq: TEAD) is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens.” Source: RevenueBase Database · checked Sep 27, 2026
7	Pubmatic	Partial evidence	Redwood City, CA, United StatesHQ checked Sep 27, 2026	501-1,000	1,297 contacts →
	Partial evidence “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Source: RevenueBase Database · checked Sep 27, 2026
8	Centerfield	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,063 contacts →
	Indirect evidence “Super-powered customer acquisition.” Source: RevenueBase Database · checked Sep 27, 2026
9	Mediaocean	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,050 contacts →
	Partial evidence “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Source: RevenueBase Database · checked Sep 27, 2026
10	Machbizz Marketers PVT LTD	Indirect evidence	Pune, IndiaHQ checked Sep 27, 2026	501-1,000	967 contacts →
	Indirect evidence “MachBizz is a mission itself with a strong urge to accomplish its vision of B2B Digital Marketing and lead generation.” Source: RevenueBase Database · checked Sep 27, 2026
11	Magnite	Partial evidence	United StatesHQ checked Sep 27, 2026	501-1,000	910 contacts →
	Partial evidence “We’re Magnite (NASDAQ: MGNI), the world’s largest independent sell-side advertising company.” Source: RevenueBase Database · checked Sep 27, 2026
12	Adform	Indirect evidence	Copenhagen, DenmarkHQ checked Sep 27, 2026	501-1,000	847 contacts →
	Indirect evidence “Adform is the most powerful and safe media buying platform in the world.” Source: RevenueBase Database · checked Sep 27, 2026
13	KARGO	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	843 contacts →
	Indirect evidence “Kargo creates memorable experiences for advertisers that go beyond the first impression to captivate consumer attention.” Source: RevenueBase Database · checked Sep 27, 2026
14	Smartly	Partial evidence	Helsinki, FinlandHQ checked Sep 27, 2026	501-1,000	827 contacts →
	Partial evidence “Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers.” Source: RevenueBase Database · checked Sep 27, 2026
15	Infuse	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 27, 2026	1,001-5,000	796 contacts →
	Indirect evidence “Demand Excellence Delivered We are INFUSE, a global B2B demand and revenue marketing performance company.” Source: RevenueBase Database · checked Sep 27, 2026
16	Anteriad	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	740 contacts →
	Indirect evidence “Data Driven.” Source: RevenueBase Database · checked Sep 27, 2026
17	Equativ	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	501-1,000	705 contacts →
	Indirect evidence “Equativ is a leading independent media platform that empowers advertisers and publishers to achieve real outcomes across the entire digital ecosystem.” Source: RevenueBase Database · checked Sep 27, 2026
18	Nexxen	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	673 contacts →
	Partial evidence “Nexxen is the advertising platform that delivers full-funnel performance powered by unique data and media.” Source: RevenueBase Database · checked Sep 27, 2026
19	Innovid	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	640 contacts →
	Indirect evidence “Innovid is the leading independent ad tech platform, empowering marketers to create, deliver, measure, and optimize ad-supported experiences that people love.” Source: RevenueBase Database · checked Sep 27, 2026
20	Perion	Indirect evidence	New York, United StatesHQ checked Sep 27, 2026	501-1,000	621 contacts →
	Indirect evidence “Perion is helping agencies, brands and retailers get better results with their marketing investments by providing advanced technology across all major digital channels.” Source: RevenueBase Database · checked Sep 27, 2026
21	Multiview	Indirect evidence	Irving, TX, United StatesHQ checked Sep 27, 2026	501-1,000	616 contacts →
	Indirect evidence “Multiview is a B2B digital marketing agency helping associations and businesses reach, engage and grow their most valued relationships.” Source: RevenueBase Database · checked Sep 27, 2026
22	OGURY	Indirect evidence	London, FranceHQ checked Sep 27, 2026	501-1,000	595 contacts →
	Indirect evidence “Ogury is a global adtech company powered by Persona Intelligence, its proprietary technology that enables brands and agencies to activate consistent persona-based strategies…” Source: RevenueBase Database · checked Sep 27, 2026
23	Precis	Indirect evidence	Stockholm, SwedenHQ checked Sep 27, 2026	201-500	535 contacts →
	Indirect evidence “Precis is a modern, tech-powered digital marketing agency specialising in media buying, analytics, creative, and proprietary technology.” Source: RevenueBase Database · checked Sep 27, 2026
24	Affinity Global	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	446 contacts →
	Indirect evidence “Affinity is a leading global AdTech company, empowering publishers to maximize revenue and enabling advertisers to reach their ideal audiences.” Source: RevenueBase Database · checked Sep 27, 2026
25	Mspark	Partial evidence	Helena, AL, United StatesHQ checked Sep 27, 2026	201-500	442 contacts →
	Partial evidence “Mspark is a results-driven marketing partner built for accountability.” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: account-based advertising firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names account-based advertising firms.
Partial evidence: Its own public description names part of account-based advertising firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name account-based advertising firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 7,501 account-based advertising firms worldwide

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Account-based advertising firms worldwide at a glance

As of Sep 27, 2026

32.9%Verified-email coverage

15.6Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

3,999

11-50

2,575

51-200

675

201-500

163

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among account-based advertising firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for account-based advertising firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “account-based advertising firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names account-based advertising firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among account-based advertising firms, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 38,369 across the full list. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Account-based advertising firms by location

59 lists · largest first

Every Account-based advertising firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names account-based advertising firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many account-based advertising firms are there worldwide?

RevenueBase identified 7,501 account-based advertising firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Epsilon, headquartered in Irving, tops this list with the largest team on record.

Which country has the most account-based advertising firms?

The United States leads with 1,975 companies, followed by India (751) and the United Kingdom (449). Every account-based advertising firms list by country and city is linked on this page.

Which city has the most account-based advertising firms?

London leads with 247 headquartered companies, followed by New York (217) and Pune (106).

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 38,369 verified decision-maker contacts tracked across these 7,501 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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 Smart Search, 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.