Websites Using Zefr

Zefr is a brand suitability and contextual targeting platform for video advertising.

Categories: Ad verification

Official website: https://zefr.com

Zefr is ranked #20 of 20 in Ad verification by website adoption.

Ad verification alternatives ranked by popularity

1. Integral Ad Science — 3,396 websites
2. Comscore — 3,274 websites
3. Adelaide — 0 websites
4. Arsys Domain Parking — 0 websites
5. Cheq — 0 websites
6. Confiant — 0 websites
7. DoubleVerify — 0 websites
8. GoDaddy Domain Parking — 0 websites
9. Grapeshot — 0 websites
10. HUMAN — 0 websites

How WhatStack detects Zefr

WhatStack detects Zefr by analyzing HTTP headers, HTML source code, JavaScript globals, meta tags, cookies, DNS records, and ads.txt entries using signature-based pattern matching across 10 different analyzers.

Frequently Asked Questions

What is Zefr?

Zefr is a brand suitability and contextual targeting platform for video advertising.

How many websites use Zefr?

WhatStack has detected Zefr on 0 websites in our database.

How do you detect Zefr?

We analyze HTTP headers, HTML source, JavaScript globals, meta tags, cookies, DNS records, and ads.txt entries to identify Zefr with high accuracy using signature-based pattern matching.