Company lists · Data refreshed November 2026

Top 25 Ad effectiveness testing companies worldwide

RevenueBase identified 232 company matches for ad effectiveness testing companies worldwide as of November 2026 and tracks 12,268 professional contacts across them, including 3,401 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for ad effectiveness testing companies 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 ad effectiveness testing companies 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
232Companies
12,268Contacts tracked
3,401Verified emails
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The 25 largest ad effectiveness testing companies worldwide

Ranked by team size
Top 25 of 232 company matches for ad effectiveness testing companies 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSao Paulo, BrazilHQ recorded Nov 6, 20261,001-5,0002,953 contacts →

Exact match

“Kantar IBOPE Media agora é Ibope.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchReston, VA, United StatesHQ recorded Nov 6, 20261,001-5,0001,331 contacts →

Exact match

“Comscore (NASDAQ: SCOR) is a global, trusted partner for planning, transacting and evaluating media across platforms.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,0001,171 contacts →

Exact match

“Kantar Media is now Fifty5Blue.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000651 contacts →

Exact match

“Ebiquity is the independent authority in Marketing Effectiveness.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchNew York, United StatesHQ recorded Nov 6, 202651-200541 contacts →

Exact match

“good apple builds smarter strategies that drive real impact.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchGlendale, CT, United StatesHQ recorded Nov 6, 2026201-500318 contacts →

Exact match

“DISQO is a leading provider of advertising outcomes intelligence, measuring brand and performance outcomes across every media channel to power data-driven marketing decisions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202610001+199 contacts →

Exact match

“MAGNA is the media intelligence unit within IPG Mediabrands and the driving force behind advertising forecasts, understanding consumer behavior, marketplace insights, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWarsaw, PolandHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“We are an international research and technology company providing digital and cross-media audience measurement and advanced marketing solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200173 contacts →

Exact match

“EDO, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026n/a157 contacts →

Exact match

“The Advertising Research Foundation (ARF) is the only organization that creates and curates objective, original research through education, events, and networking for advertising…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGhent, BelgiumHQ recorded Nov 6, 202651-200120 contacts →

Exact match

“Ipsos Belgium is the largest market research agency in the country, offering its services through its locations in Antwerp, Ghent, and Louvain.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCourbevoie, FranceHQ recorded Nov 6, 2026201-50092 contacts →

Exact match

“Kantar Media est le leader reconnu des études et analyses médias, pour les données publicitaires de référence, le profilage et le ciblage des consommateurs avec TGI, et l’analyse…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWestbury, NY, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“We’re a full-service marketing research agency with our core competencies in foundational strategy work, creative development and quantification, modeling and forecasting, through…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRhinebeck, United StatesHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“Phoenix Marketing International is now MarketCast!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchKissimmee, FL, United StatesHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Audience Brand Consideration Sales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026n/a64 contacts →

Exact match

“Nielsen Holdings plc (NYSE: NLSN) is a global measurement and data analytics company that provides the most complete and trusted view available of consumers and markets worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“On Device provides independent Brand Lift measurement to advertisers, planners and publishers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“Swayable | Persuasion Intelligence.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchUnited StatesHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“Исследования, необходимые для развития брендов, разработки маркетинговой поддержки и оценки ее эффективности – основное направление нашей работы.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNew York, United StatesHQ recorded Nov 6, 20261,001-5,00050 contacts →

Exact match

“Competitrack, a Market Track company, is a full service competitive advertising tracking firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNew York, OH, United StatesHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“NCS’s mission is to help marketers and media companies measure and improve advertising performance by accurately linking what consumers watch, see, or hear with what they buy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“Upwave is the Brand Outcomes Measurement Platform.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchParis, FranceHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“Realytics digitalises TV by measuring its efficiency on digital channels.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“MeMo² a Kantar company - is a globally recognized leader in the field of marketing and business consulting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchTashkent, UzbekistanHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“The company Kantar Research LLC (part of the international holding company Kantar and WPP) was given the right to measure the television audience of Uzbekistan on the basis of the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 232 ad effectiveness testing companies worldwide

See the full list, filter by size, metro and specialty, and access 3,401 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ad effectiveness testing companies worldwide at a glance

As of Nov 6, 2026
27.7%Verified-email coverage
52.9Average contacts per company
11-50Median size (employees)
7.3%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
93
11-50
90
51-200
25
201-500
7
501-1,000
4
1,001-5,000
9
5,001-10,000
1
10001+
2

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 ad effectiveness testing companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “ad effectiveness testing companies” 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 3,401 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.

Ad effectiveness testing companies by location

1 lists · largest first

Every Ad effectiveness testing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “ad effectiveness testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ad effectiveness testing companies are there worldwide?

RevenueBase identified 232 company matches for ad effectiveness testing companies 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?

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

Which country has the most ad effectiveness testing companies?

The United States leads with 57 companies. Every ad effectiveness testing companies list by country and city is linked on this page.

Which city has the most ad effectiveness testing companies?

New York leads with 17 company records, followed by London (8) and Paris (7).

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 3,401 professional contacts with verified work emails tracked across these 232 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.