Company lists · Data refreshed November 2026

Top 25 Internet advertising firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 19,603 companies tracked

RevenueBase identified 19,603 company matches for internet advertising firms worldwide as of November 2026 and tracks 150,923 professional contacts across them, including 30,137 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for internet advertising firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for internet advertising firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

19,603Companies

150,923Contacts tracked

30,137Verified emails

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The 25 largest internet advertising firms worldwide

Ranked by team size

Top 25 of 19,603 company matches for internet advertising firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Publicis Media	Exact match	London, United KingdomHQ recorded Nov 6, 2026	10001+	7,259 contacts →
	Exact match “Publicis Media harnesses the power of modern media through leading agency brands Dysrupt, Infinite Roar, Publicis Collective, Publicis Health Media, Spark Foundry, Starcom and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Horizon Media	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,506 contacts →
	Exact match “Horizon Media is a leader in driving business-based outcomes for marketers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	ALEPH	Exact match	Miami, FL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,131 contacts →
	Exact match “Aleph is a global leader accelerating digital advertising, and fintech solutions across more than 130 high-growth markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Taboola	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,038 contacts →
	Exact match “Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Mediaocean	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,111 contacts →
	Exact match “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Smartly	Exact match	Helsinki, FinlandHQ recorded Nov 6, 2026	501-1,000	922 contacts →
	Exact match “Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Logical Position	Exact match	Lake Oswego, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	907 contacts →
	Exact match “Logical Position (LP) is an Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Interactive Avenues	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	501-1,000	785 contacts →
	Exact match “Interactive Avenues is India’s leading full-service digital marketing company with offices in Mumbai (headquarters), Gurugram, Bengaluru, Chennai and Kolkata.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Equativ	Exact match	Paris, FranceHQ recorded Nov 6, 2026	501-1,000	766 contacts →
	Exact match “Equativ is a leading independent media platform that empowers advertisers and publishers to achieve real outcomes across the entire digital ecosystem.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Cadastra	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	501-1,000	744 contacts →
	Exact match “We are a global company that blends digital marketing services, consulting and technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Perion	Exact match	New York, United StatesHQ recorded Nov 6, 2026	501-1,000	685 contacts →
	Exact match “Perion is helping agencies, brands and retailers get better results with their marketing investments by providing advanced technology across all major digital channels.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Adsmurai	Exact match	Barcelona, United StatesHQ recorded Nov 6, 2026	201-500	507 contacts →
	Exact match “Adsmurai is a Growth-Tech Partner that helps brands transform marketing into a connected, measurable, and scalable growth system.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	M C Saatchi Performance	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	506 contacts →
	Exact match “We are a Global digital media agency specializing in taking a human approach to connecting brands with people across all channels.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	BIG ADS	Exact match	Sydney, AustraliaHQ recorded Nov 6, 2026	n/a	413 contacts →
	Exact match “Big Ads has been providing digital ad-tech solutions for 3 years with great success thanks to the release of Buddy, an ad-tech platform which produces rich media creative tags to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Localedge	Exact match	Buffalo, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	401 contacts →
	Exact match “LocalEdge, a Hearst Media Services Company, offers a full suite of online advertising products and services for any size business and budget across the country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Innity	Exact match	Petaling Jaya, MalaysiaHQ recorded Nov 6, 2026	201-500	393 contacts →
	Exact match “Innity is a leading online media company in Asia that offers best in class data-driven ad tech solutions that combines creative programmatic, ad-serving, data management, audience…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Yektanet یکتانت	Exact match	Tehran, IranHQ recorded Nov 6, 2026	201-500	391 contacts →
	Exact match “YEKTANET is the biggest and most advanced online advertising network in Iran serving over 25 million unique users with 5 billion impressions per month.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Arabyads	Exact match	Dubai, United Arab EmiratesHQ recorded Nov 6, 2026	201-500	382 contacts →
	Exact match “ArabyAds is an ad-tech company that empowers ecommerce marketing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Vertoz	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	201-500	351 contacts →
	Exact match “Vertoz (NSE: VERTOZ) is a global AI‑led digital advertising ecosystem, where strategies and execution are engineered for outcomes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Inmarket	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	201-500	334 contacts →
	Exact match “InMarket is the outcome intelligence platform built for marketers who demand results over proxy metrics.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Adaan Digital Solutions	Exact match	New Delhi, IndiaHQ recorded Nov 6, 2026	201-500	316 contacts →
	Exact match “Adaan specializes in designing and implementing digital marketing services and solutions for SMBs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	W3era WEB Technology PVT LTD	Exact match	Jaipur, IndiaHQ recorded Nov 6, 2026	201-500	298 contacts →
	Exact match “Most businesses don't struggle because they lack effort.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Adsterra	Exact match	Limassol, CyprusHQ recorded Nov 6, 2026	201-500	295 contacts →
	Exact match “Founded in 2013, Adsterra is now a global ad network with a unique Partner Care approach, trusted by 50K+ advertisers and publishers worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Adways INC	Exact match	Shinjuku-ku, JapanHQ recorded Nov 6, 2026	1,001-5,000	293 contacts →
	Exact match “About Adways Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Smartsites	Exact match	Paramus, NJ, United StatesHQ recorded Nov 6, 2026	201-500	290 contacts →
	Exact match “Outsmart the competition with best-in-class digital marketing services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “internet advertising firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 19,603 internet advertising firms worldwide

See the full list, filter by size, metro and specialty, and access 30,137 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internet advertising firms worldwide at a glance

As of Nov 6, 2026

20.0%Verified-email coverage

7.7Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

12,995

11-50

5,114

51-200

1,005

201-500

250

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

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for internet advertising firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “internet advertising firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 30,137 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Internet advertising firms by location

121 lists · largest first

Every Internet 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “internet advertising firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many internet advertising firms are there worldwide?

RevenueBase identified 19,603 company matches for internet advertising firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Publicis Media tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most internet advertising firms?

The United States leads with 3,039 companies, followed by India (2,305) and Brazil (906). Every internet advertising firms list by country and city is linked on this page.

Which city has the most internet advertising firms?

London leads with 306 company records, followed by New Delhi (210) and Sao Paulo (199).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 30,137 professional contacts with verified work emails tracked across these 19,603 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.