Root domains
Every observed server name folded to its registrable domain (eTLD+1), so subdomain sprawl collapses — the hundreds of per-widget *.w.hcaptcha.com hosts become one hcaptcha.com. hostnames counts the distinct SNIs that fold into each. 13,776 domains.
| domain | hostnames | observations |
|---|---|---|
| google.com | 92 | 28,413 |
| instagram.com | 13 | 18,453 |
| tiktok.com | 23 | 16,380 |
| bestbuy.com | 5 | 16,303 |
| facebook.com | 24 | 14,633 |
| tiktokv.com | 35 | 10,655 |
| tiktokv.eu | 9 | 10,125 |
| ticketmaster.com | 13 | 8,499 |
| googleapis.com | 97 | 6,701 |
| hertz.io | 2 | 5,719 |
| capcutapi.com | 8 | 5,149 |
| walmart.com | 11 | 4,817 |
| budget.com | 1 | 4,291 |
| ipify.org | 3 | 4,223 |
| gstatic.com | 14 | 3,804 |
| cloudfront.net | 105 | 3,520 |
| la28.org | 4 | 3,019 |
| rentcars.com | 3 | 2,996 |
| px-cloud.net | 22 | 2,957 |
| cloudflare.com | 17 | 2,942 |
| ipbagelhub.com | 1 | 2,779 |
| ssg.com | 1 | 2,718 |
| tokopedia.com | 3 | 2,555 |
| target.com | 11 | 2,524 |
| e-licitatie.ro | 2 | 2,503 |
| gokinetic.com | 1 | 2,446 |
| hcaptcha.com | 469 | 2,365 |
| dana.id | 1 | 2,172 |
| live.com | 12 | 2,057 |
| tiktokw.us | 3 | 2,049 |
| twitter.com | 7 | 2,040 |
| mobikwik.com | 3 | 1,795 |
| amazonaws.com | 82 | 1,773 |
| youtube.com | 11 | 1,770 |
| frontier.com | 1 | 1,738 |
| google.bg | 1 | 1,640 |
| pokemoncenter.com | 2 | 1,638 |
| naver.com | 40 | 1,539 |
| x.com | 4 | 1,538 |
| doubleclick.net | 26 | 1,531 |
| online-metrix.net | 663 | 1,497 |
| booking.com | 10 | 1,416 |
| gmx.net | 12 | 1,403 |
| linkedin.com | 23 | 1,362 |
| paytm.com | 4 | 1,309 |
| tiktokvapp.eu | 1 | 1,268 |
| steamcommunity.com | 1 | 1,262 |
| expedia.com | 3 | 1,243 |
| dns.google | 1 | 1,204 |
| ipinfo.io | 4 | 1,186 |
1–50 of 13,776