A programmatic advertising network providing header bidding demand and display advertising for publishers. Red Volcano tracks 26,001 publisher websites using A4G, with data refreshed weekly from proprietary crawlers.
The highest-ranked websites using A4G, sorted by global traffic rank. Technology detection is based on Red Volcano's weekly crawl of ads.txt files, header bidding configurations, and JavaScript tag analysis.
| # | Domain | Global Rank | Monthly Pageviews | Country | Category |
|---|---|---|---|---|---|
| 1 | reddit.com | #8 | 4,385,329,502 | United States | Computers Electronics And Technology |
| 2 | microsoft.com | #33 | 1,209,647,729 | United States | Computers Electronics And Technology |
| 3 | ebay.com | #42 | 666,753,176 | United States | E-Commerce And Shopping |
| 4 | ameblo.jp | #181 | 226,152,817 | Japan | Computers Electronics And Technology |
| 5 | livedoor.jp | #287 | 159,743,578 | Japan | News And Media |
| 6 | elpais.com | #378 | 134,491,945 | Spain | News And Media |
| 7 | go.com | #502 | 95,975,645 | United States | Arts And Entertainment |
| 8 | lefigaro.fr | #520 | 95,873,920 | France | News And Media |
| 9 | next.co.uk | #542 | 34,739,304 | United Kingdom | Lifestyle |
| 10 | cbsnews.com | #596 | 98,151,638 | United States | News And Media |
| 11 | kohls.com | #624 | 53,286,260 | United States | E-Commerce And Shopping |
| 12 | demonicscans.org | #660 | 70,558,815 | United States | Arts And Entertainment |
| 13 | markt.de | #804 | 36,447,128 | Germany | E-Commerce And Shopping |
| 14 | sportbox.ru | #814 | 70,870,131 | Russia | Sports |
| 15 | ebay.com.au | #928 | 39,772,266 | Australia | E-Commerce And Shopping |
| 16 | flightaware.com | #999 | 54,012,237 | United States | Travel And Tourism |
| 17 | calendly.com | #1,015 | 39,852,566 | United States | Computers Electronics And Technology |
| 18 | x.ai | #1,031 | 48,441,520 | United States | Ai Chatbots And Tools |
| 19 | abril.com.br | #1,081 | 66,051,002 | Brazil | News And Media |
| 20 | thesun.co.uk | #1,118 | 55,915,358 | United Kingdom | News And Media |
| 21 | cardekho.com | #1,146 | 39,620,488 | India | Vehicles |
| 22 | si.com | #1,326 | 49,819,940 | United States | Sports |
| 23 | fnac.com | #1,638 | 27,197,684 | France | E-Commerce And Shopping |
| 24 | the-sun.com | #1,668 | 42,866,272 | United States | News And Media |
| 25 | netshoes.com.br | #1,692 | 26,632,771 | Brazil | E-Commerce And Shopping |
| 26 | onthemarket.com | #1,778 | 18,648,049 | United Kingdom | Business And Consumer Services |
| 27 | ekstrabladet.dk | #1,818 | 28,697,961 | Denmark | News And Media |
| 28 | postype.com | #1,902 | 24,903,001 | South Korea | Computers Electronics And Technology |
| 29 | otodom.pl | #1,912 | 19,659,429 | Poland | Business And Consumer Services |
| 30 | climatempo.com.br | #1,941 | 41,313,366 | Brazil | News And Media |
| 31 | eltiempo.com | #1,963 | 35,389,023 | Colombia | News And Media |
| 32 | sncf-connect.com | #1,970 | 20,946,687 | France | Travel And Tourism |
| 33 | thetimes.com | #2,032 | 30,878,688 | United Kingdom | News And Media |
| 34 | vecteezy.com | #2,079 | 22,845,487 | India | Arts And Entertainment |
| 35 | xataka.com | #2,091 | 33,394,397 | Spain | Computers Electronics And Technology |
| 36 | theknot.com | #2,208 | 20,219,847 | United States | Lifestyle |
| 37 | interac.ca | #2,211 | 28,606,770 | Canada | Finance |
| 38 | polsatnews.pl | #2,295 | 30,252,449 | Poland | News And Media |
| 39 | thairath.co.th | #2,437 | 25,538,898 | Thailand | News And Media |
| 40 | delish.com | #2,450 | 27,151,318 | United States | Food And Drink |
| 41 | cults3d.com | #2,485 | 15,211,091 | United States | Computers Electronics And Technology |
| 42 | whitepages.com | #2,533 | 18,259,168 | United States | Reference Materials |
| 43 | lotterysambadresult.in | #2,567 | 26,722,121 | India | Gambling |
| 44 | groupon.com | #2,572 | 19,415,169 | United States | E-Commerce And Shopping |
| 45 | infojobs.com.br | #2,599 | 15,929,706 | Brazil | Jobs And Career |
| 46 | centrum.cz | #2,622 | 22,627,778 | Czech Republic | News And Media |
| 47 | chemistwarehouse.com.au | #2,675 | 18,842,452 | Australia | Health |
| 48 | kijiji.ca | #2,691 | 15,119,408 | Canada | E-Commerce And Shopping |
| 49 | stardewvalleywiki.com | #2,719 | 21,096,261 | United States | Games |
| 50 | woot.com | #2,731 | 15,654,746 | United States | E-Commerce And Shopping |
Want the full list of 26,001 sites using A4G? Filter, export, and monitor.
Book a Demo →Geographic distribution of A4G adoption across publisher websites. Shows the top markets where publishers have integrated this technology.
Which content categories show the highest adoption of A4G. Understanding vertical distribution helps SSPs and ad networks identify where this technology is most prevalent.
The most common SSP and monetization partnerships among publishers using A4G, based on ads.txt and sellers.json analysis.
Red Volcano provides complete data on all 26,001 publishers using A4G — with filters by country, vertical, traffic, and SSP relationships. Export lists, set up monitoring alerts, and access via API.
According to Red Volcano's data, 26,001 publisher websites currently use A4G. This number is updated weekly based on our proprietary web crawlers that scan ads.txt files, JavaScript tags, and header bidding configurations across 32M+ websites.
The highest adoption of A4G is in United States, followed by other major digital advertising markets. Red Volcano tracks geographic distribution across 190+ countries, with detailed breakdowns available through our platform.
Publishers using A4G most commonly also use TheMediaGrid, Index Exchange, AJA, Integral Ad Science (IAS), vi. These co-occurring technologies indicate the typical header bidding and monetization stack of publishers in this segment.
The most common publisher vertical using A4G is News And Media. Red Volcano provides detailed category breakdowns showing adoption patterns across news, entertainment, sports, technology, and dozens of other verticals.
Red Volcano detects A4G through a combination of ads.txt analysis, JavaScript header bidding wrapper detection, sellers.json cross-referencing, and proprietary crawler technology. Our data is refreshed weekly to ensure accuracy.