Zefr - About the company
Zefr is a series B company based in Los Angeles (United States), founded in 2009 by Richard Raddon and Zach James. It operates as a Provider of AI-powered content classification and brand suitability solutions. Zefr has raised $36.2M in funding from investors like IVP, USVP and MK Capital. The company has 60 active competitors, including 8 funded and 11 that have exited. Its top competitors include companies like DoubleVerify, Vobile and Pex.
Company Details
Provider of AI-powered content classification and brand suitability solutions. The company offers tools for pre-bid targeting, optimization, and post-campaign verification. Custom brand exclusions are available. It aims to enable digital advertising effectiveness while upholding brand and social responsibility values.
- Website
- zefr.com
- Social
- Email ID
- *****@zefr.com
- Registered Address
- Los Angeles, California
Key Metrics
Founded Year
2009
Location
Los Angeles, United States
Stage
Series B
Total Funding
$36.2M in 4 rounds
Latest Funding Round
Ranked
3rd among 60 active competitors
Employee Count
265 as on Jun 30, 2026
Investment & Acquisitions
Similar Companies
Legal entities associated with Zefr
Zefr is associated with 1 legal entity given below:
Legal Entity Name | Date of Incorporation | Revenue | Latest Employee Count | Documents |
|---|---|---|---|---|
ZEFR CIN: 943458703 , Belgium, Active | Dec 31, 1999 | - | 133 (As on Dec 31, 2022) | - |
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Zefr's funding and investors
Zefr has raised a total funding of $36.2M over 4 rounds. Its first funding round was on Jan 16, 2013. Its latest funding round was a Series B round on Mar 08, 2016 for $*****. 2 investors participated in its latest round. Zefr has 12 institutional investors.
Here is the list of recent funding rounds of Zefr:
Filter this list
Filter this listDate of Funding | Funding Amount | Round Name | Post-Money Valuation | Revenue Multiple | Lead Investors | Other Investors |
|---|---|---|---|---|---|---|
Mar 08, 2016 | 8837139 | Series B | 5915031 | 8660663 | 9447149 | 6437681 |
Sep 19, 2014 | 4098832 | Series B | 9633609 | 1155730 | 2630949 | 2117202 |
Feb 28, 2014 | 6283864 | Series B | 6024700 | 3448353 |
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Zefr's founders and board of directors
Founder? Claim ProfileThe founders of Zefr are Richard Raddon and Zach James. Richard Raddon and Zach James are the CEOs of Zefr.
Here are the details of Zefr's key team members:
- Richard Raddon: Co-Founder & Co-CEO of Zefr and founder of 1 other company. Contact Info: 1 email address
- Zach James: Co-Founder & Co-CEO of Zefr and founder of 1 other company.
View details of Zefr's Founder profiles and Board Members
Zefr's employee count trend
Zefr has 265 employees as of Jun 26. Here is Zefr's employee count trend over the years:
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Zefr's Competitors and alternates
Top competitors of Zefr include DoubleVerify, Vobile and Pex. Here is the list of Top 10 competitors of Zefr, ranked by Tracxn score:
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Rank | Company Details | Short Description | Total Funding | Investors | Tracxn Score |
|---|---|---|---|---|---|
1st |  DoubleVerify 2008, New York City (United States), Public | Provider of media effectiveness platform utilising measurement data and dynamic optimisation | $396M | 75/100 | |
2nd |  Vobile 2005, Santa Clara (United States), Public | Platform offering film rights management solutions | $28.8M | 64/100 | |
3rd |  Zefr 2009, Los Angeles (United States), Series B | Provider of AI-powered content classification and brand suitability solutions | $36.2M | 62/100 | |
4th | Pex 2014, San Francisco (United States), Acquired | Video analytics platform | $64M | 62/100 | |
5th | Adelaide 2020, New York City (United States), Seed | Provider of media quality measurement to improve advertising campaign performance | $8.4M | 46/100 | |
6th |  Confiant 2013, New York City (United States), Series A | Ad security and quality platform protecting against malicious online attacks | $4.1M | 45/100 | |
7th | BuyDRM 2001, Austin (United States), Acquired | Digital rights management solutions provider | - | - | 45/100 |
8th | IPTV content protection and digital rights management provider | - | 43/100 | ||
9th | Widevine Technologies 1998, Kirkland (United States), Acquired | Digital rights management solutions provider for OTT | $55.7M | 42/100 | |
10th | Adloox 2009, New York City (United States), Acquired | Platform offering ad verification software | - | - | 40/100 |
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Zefr's Investments and acquisitions
Zefr has acquired AdVerif.ai. Zefr has not made any investments as of now.Reports related to Zefr
Here is the latest report on Zefr's geography:
News related to Zefr
Filter this listMedia has covered Zefr for a total of 6 events in the last 1 year, 2 of them have been about partnerships and 1 about company updates.
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Zefr Expands Strategic Partner Network Across Türkiye, GCC and Egypt with Black C Media and RedC MediaMarTech Series•Jul 14, 2026•Zefr
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Zefr Introduces AdCP-Based Agentic Hub for Cross-Platform Social CampaignsBusiness Wire•Apr 30, 2026•Zefr
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Zefr Awarded New U.S. Patent for AI-Powered Content Classification ProcessMarTech Series•Dec 16, 2025•Zefr
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Zefr Launches Pre-Screen Brand Safety Solution for Google's Search Partner NetworkPR Newswire•May 08, 2025•Zefr
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Zefr & TikTok Expand Brand Safety with AI-Powered Exclusion ListsMarTech Series•Apr 14, 2025•Zefr, TikTok
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Executive Appointments Strengthen Nexxen’s Data, Streaming and Omnichannel ExpertiseGlobeNewswire•Mar 13, 2025•Nexxen, Zefr
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Adventure Box to acquire Zefr Media's IP for iGaming innovation.GlobeNewswire•Feb 27, 2025•Adventure Box, Zefr
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Brand safety content block lists for Meta advertisersAdNews•Feb 14, 2025•Meta, DoubleVerify, Zefr, Integral Ad Science
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