Top-Level Domain
.fail
Aggregated statistics for the top-level domain
Apex domains
1,754
we've enumerated
Subdomains seen
5,368
CT + DNS + brute
TLS certs
39
naming .fail
Hosting ASNs
—
distinct origins
Domain Distribution
Apex domains with the most known subdomains — large orgs, telecoms, hosters.
| Apex | Subdomains |
|---|---|
| 10cs.fail | 704 |
| mottu.fail | 60 |
| ip.fail | 59 |
| gridmetrix.fail | 54 |
| reactive-fleet.fail | 49 |
| ityasa.fail | 43 |
| wlx.fail | 43 |
| bugbounty.fail | 42 |
| bubet.fail | 28 |
| reactive-technologies.fail | 27 |
| mega38sky.fail | 26 |
| capitalism.fail | 25 |
| cleaning.fail | 23 |
| shannon.fail | 23 |
| perf.fail | 23 |
| tik.fail | 23 |
| fontkeming.fail | 22 |
| smop.fail | 21 |
| air.fail | 21 |
| tiger.fail | 21 |
| mebdil.fail | 19 |
| loreng88.fail | 19 |
| unionfedsbk.fail | 19 |
| srv.fail | 19 |
| paulbuonopane.fail | 18 |
| insta-suite.fail | 18 |
| monke.fail | 18 |
| jago-mahjong.fail | 18 |
| vip79.fail | 17 |
| codemesh3d.fail | 17 |
| mtrx.fail | 17 |
| wave.fail | 17 |
| rutify.fail | 16 |
| 301.fail | 16 |
| bypass.fail | 16 |
| verifox.fail | 16 |
| lordserial.fail | 16 |
| no-reply.fail | 16 |
| ssh.fail | 15 |
| codespace.fail | 15 |
| nic.fail | 15 |
| itcamefromthepublicdomain.fail | 15 |
| mouse.fail | 15 |
| adtraction.fail | 15 |
| copy.fail | 15 |
| grey.fail | 15 |
| jquery.fail | 15 |
| aaaarg.fail | 14 |
| orga.fail | 14 |
| connect.fail | 14 |
Top Certificate Issuers
| Issuer (CA) | Certs |
|---|---|
| Let's Encrypt | 22 |
| Amazon | 5 |
| Cloudflare | 3 |
| YE1 | 2 |
| YR1 | 2 |
| YE2 | 2 |
| YR2 | 1 |
| WR3 | 1 |
| WR1 | 1 |
Top Hosting ASNs
No hosting attribution yet
Forward-DNS crawler hasn't resolved enough .fail apexes to BGP-attributable IPs.
Tech-Stack Distribution
No Wappalyzer detections
Body-fetcher hasn't covered enough .fail sites yet for stack patterns to emerge.
Most-resolved apex domains
Apexes resolving to the most distinct A/AAAA records — popularity proxy.
| Apex | Distinct IPs |
|---|---|
| mega.fail | 16 |
| vanity.fail | 15 |
| www.sync.fail | 14 |
| www.files.fail | 14 |
| from.fail | 14 |
| www.toot.fail | 14 |
| www.soft.fail | 13 |
| blackjack.fail | 13 |
| www.open.fail | 13 |
| open.fail | 13 |
| law.fail | 13 |
| bet88.fail | 13 |
| char.fail | 13 |
| mathias.fail | 13 |
| www.hindu.fail | 13 |
| www.ethan.fail | 13 |
| ethan.fail | 13 |
| www.arlo.fail | 13 |
| f2f.fail | 13 |
| www.vanity.fail | 13 |
| www.reallife.fail | 13 |
| spry.fail | 13 |
| montana.fail | 13 |
| when.fail | 13 |
| massage.fail | 13 |
ℹ Coverage will improve significantly once CZDS zone-file access is granted for this TLD.