Company lists · Data refreshed September 2026

Top 25 Header bidding platforms worldwide

Name: Header bidding platforms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 679 companies tracked

RevenueBase identified 679 header bidding platforms worldwide as of September 2026 and tracks 10,860 professional contacts across them, including 3,839 with verified work emails. The United States is the largest market and Singapore the largest hub.

This list covers header bidding platforms 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 28, 2026. Country and city lists for header bidding platforms 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 28, 2026 86% judged on-target in blind review

679Companies

10,860Contacts tracked

3,839Verified emails

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The 25 largest header bidding platforms worldwide

Ranked by team size

Top 25 of 679 header bidding platforms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to header bidding platforms: 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	Adform	Partial evidence	Copenhagen, DenmarkHQ checked Sep 28, 2026	501-1,000	847 contacts →
	Partial evidence “Adform is the most powerful and safe media buying platform in the world.” Source: RevenueBase Database · checked Sep 28, 2026
2	Equativ	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	501-1,000	705 contacts →
	Partial 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 28, 2026
3	Affinity Global	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
4	advertising.com	Indirect evidence	United StatesHQ checked Sep 28, 2026	n/a	297 contacts →
	Indirect evidence “Advertising.com brings advanced programmatic solutions to companies with large user bases, helping them unlock new revenue streams, strengthen user loyalty, and deliver high-value…” Source: RevenueBase Database · checked Sep 28, 2026
5	Mediavine	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	213 contacts →
	Indirect evidence “Mediavine powers monetization for independent publishers, delivering the technology, demand infrastructure, and revenue performance that digital businesses need to grow.” Source: RevenueBase Database · checked Sep 28, 2026
6	EZOIC	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 28, 2026	201-500	207 contacts →
	Partial evidence “Ezoic is an award-winning technology platform that helps digital publishers maximize ad revenue and grow their audiences through advanced, easy-to-use solutions.” Source: RevenueBase Database · checked Sep 28, 2026
7	XANDR	Indirect evidence	New York, United StatesHQ checked Sep 28, 2026	1,001-5,000	203 contacts →
	Indirect evidence “Xandr, a part of Microsoft Advertising, powers a global marketplace for premium advertising.” Source: RevenueBase Database · checked Sep 28, 2026
8	Adpushup	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 28, 2026	51-200	174 contacts →
	Indirect evidence “AdPushup was formed in 2014 with a simple idea: While A/B testing was becoming popular, no one was using it to optimize publisher-side ad layouts.” Source: RevenueBase Database · checked Sep 28, 2026
9	Freestar	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 28, 2026	201-500	174 contacts →
	Indirect evidence “Freestar engineers cutting-edge monetization solutions for websites and apps.” Source: RevenueBase Database · checked Sep 28, 2026
10	YOC	Indirect evidence	Berlin, GermanyHQ checked Sep 28, 2026	51-200	168 contacts →
	Indirect evidence “YOC is a technology company and develops software for the digital advertising market.” Source: RevenueBase Database · checked Sep 28, 2026
11	RISE	Indirect evidence	Tel Aviv, IsraelHQ checked Sep 28, 2026	51-200	166 contacts →
	Indirect evidence “Rise is leveraging the power of AI to revolutionize digital advertising by enhancing auction logic with RTB efficiency.” Source: RevenueBase Database · checked Sep 28, 2026
12	Adtelligent INC	Indirect evidence	Lewes, DE, United KingdomHQ checked Sep 28, 2026	51-200	159 contacts →
	Indirect evidence “Adtelligent is a global advertising technology company offering in-house solutions that help online media companies, digital sales houses, and ad networks effectively monetize web…” Source: RevenueBase Database · checked Sep 28, 2026
13	Microad, INC	Partial evidence	Shibuya, JapanHQ checked Sep 28, 2026	201-500	156 contacts →
	Partial evidence “DSPDemand-Side PlatformUNIVERSE AdsSSPSupply-Side PlatformMicroAd COMPASS 20116RTBSSPDSP "MicroAd BLADE ""MicroAd BLADE "MicroAd BLADE "2021320214AIDSP"UNIVERSE Ads " MicroAd is a…” Source: RevenueBase Database · checked Sep 28, 2026
14	Geniee International Group	Partial evidence	Singapore, JapanHQ checked Sep 28, 2026	201-500	150 contacts →
	Partial evidence “A member of SoftBank Group, GENIEE (TSE6562) is a public global AdTech/MarTech firm listed in Tokyo Stock Exchange market.* GENIEE's Supply Side Platform(SSP) is designed for…” Source: RevenueBase Database · checked Sep 28, 2026
15	C1x INC	Indirect evidence	San Jose, United StatesHQ checked Sep 28, 2026	51-200	128 contacts →
	Indirect evidence “AI, Data & Revenue Technology for the Intelligent Enterprise C1X is a Silicon Valley-based AI, Data, and Revenue Technology company helping organizations transform data into…” Source: RevenueBase Database · checked Sep 28, 2026
16	Byyd Mobile Advertising Platform	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	120 contacts →
	Strong evidence “BYYD is the mobile advertising platform for real-time bidding on mobile inventory.” Source: RevenueBase Database · checked Sep 28, 2026
17	Somo Media	Indirect evidence	Delhi, IndiaHQ checked Sep 28, 2026	51-200	113 contacts →
	Indirect evidence “Founded in 2018, SOMO Media Agency operates at the intersection of ad-tech, publisher monetization, and performance marketing, a rare vantage point that lets us see the ad…” Source: RevenueBase Database · checked Sep 28, 2026
18	ZEDO	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	201-500	110 contacts →
	Indirect evidence “ZEDO, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
19	Admaven	Indirect evidence	Tel Aviv, IsraelHQ checked Sep 28, 2026	51-200	109 contacts →
	Indirect evidence “AdMaven is constantly building an engine which yields an increased revenue for publishers, while enabling advertisers to get high performance and vast distribution for their ad…” Source: RevenueBase Database · checked Sep 28, 2026
20	Adtiming	Partial evidence	SingaporeHQ checked Sep 28, 2026	51-200	105 contacts →
	Partial evidence “AdTiming is a global marketing platform that is designed to maximize revenue and improve advertising efficiency, a comprehensive supply chain from advertisement to monetization.” Source: RevenueBase Database · checked Sep 28, 2026
21	Monetizemore	Indirect evidence	White Rock, BC, CanadaHQ checked Sep 28, 2026	51-200	101 contacts →
	Indirect evidence “MonetizeMore is a Google Certified Publishing Partner that has built an award-winning suite of AdTech to empower digital publishers.” Source: RevenueBase Database · checked Sep 28, 2026
22	Smartyads	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 28, 2026	51-200	90 contacts →
	Indirect evidence “SmartyAds is a global AdTech company founded in 2013, providing programmatic advertising and monetization solutions for media buyers and sellers worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
23	EPOM	Indirect evidence	Roseau, DominicaHQ checked Sep 28, 2026	51-200	87 contacts →
	Indirect evidence “Epom is a family of ad tech products designed for meaningful advertising.” Source: RevenueBase Database · checked Sep 28, 2026
24	Mediaforce	Strong evidence	Tel Aviv, IsraelHQ checked Sep 28, 2026	51-200	77 contacts →
	Strong evidence “Founded in 2007, MediaForce is a group of ad-technology and product experts operating a private media bidding platform capable of massive scale, reach and speed.” Source: RevenueBase Database · checked Sep 28, 2026
25	Geomotiv	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 28, 2026	201-500	75 contacts →
	Indirect evidence “Geomotiv, staff augmentation and dedicated teams for technology companies.” Source: RevenueBase Database · checked Sep 28, 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: header bidding platforms. 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 header bidding platforms.
Partial evidence: Its own public description names part of header bidding platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name header bidding platforms. 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 679 header bidding platforms worldwide

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Header bidding platforms worldwide at a glance

As of Sep 28, 2026

35.3%Verified-email coverage

16.0Average contacts per company

11-50Median size (employees)

4.4%Largest-city concentration · Singapore

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

237

11-50

313

51-200

103

201-500

501-1,000

1,001-5,000

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 header bidding platforms, 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 header bidding platforms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “header bidding platforms”. 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 header bidding platforms), 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 header bidding platforms, 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, 3,839 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 28, 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.

Header bidding platforms by location

5 lists · largest first

Every Header bidding platforms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Header bidding platforms based in New York, United States29

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 header bidding platforms, 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 header bidding platforms are there worldwide?

RevenueBase identified 679 header bidding platforms 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?

Adform, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most header bidding platforms?

The United States leads with 159 companies, followed by India (48) and Israel (38). Every header bidding platforms list by country and city is linked on this page.

Which city has the most header bidding platforms?

Singapore leads with 30 headquartered companies, followed by New York (29) and London (28).

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 3,839 verified decision-maker contacts tracked across these 679 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 28, 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.