Top-Level Domain
.bio
Aggregated statistics for the top-level domain
Apex domains
31,500
we've enumerated
Subdomains seen
92,546
CT + DNS + brute
TLS certs
—
naming .bio
Hosting ASNs
—
distinct origins
Domain Distribution
Apex domains with the most known subdomains — large orgs, telecoms, hosters.
| Apex | Subdomains |
|---|---|
| v.bio | 1,686 |
| sperm.bio | 743 |
| zona.bio | 718 |
| biologique.bio | 681 |
| meulink.bio | 514 |
| 000.bio | 506 |
| twitter.bio | 436 |
| hdrezka.bio | 411 |
| envs-terra.bio | 301 |
| campsite.bio | 284 |
| listing.bio | 265 |
| biomatters.bio | 255 |
| 99aset.bio | 221 |
| kebab.bio | 179 |
| lordfilm.bio | 158 |
| ganymede.bio | 158 |
| zephyrai.bio | 145 |
| coders.bio | 126 |
| lunar77jaya.bio | 126 |
| telegramadresi.bio | 125 |
| puti.bio | 123 |
| 49jili.bio | 122 |
| jurassic.bio | 118 |
| soda69.bio | 117 |
| hydra.bio | 117 |
| inkr.bio | 113 |
| cek.bio | 113 |
| santalis.bio | 110 |
| aequos.bio | 101 |
| dev-climb.bio | 97 |
| msc.bio | 97 |
| aerialinstallationsbirmingham.bio | 96 |
| datakit.bio | 96 |
| corn.bio | 95 |
| ti789.bio | 94 |
| izibio.bio | 90 |
| byte.bio | 85 |
| bambu.bio | 85 |
| thethaotx88.bio | 85 |
| karate.bio | 83 |
| pertamabet88.bio | 81 |
| kansas.bio | 78 |
| spcs.bio | 77 |
| cheers.bio | 76 |
| helical-ai.bio | 75 |
| nplab.bio | 72 |
| pokaslot.bio | 72 |
| ai6.bio | 69 |
| giaitrisoc88.bio | 69 |
| papastream.bio | 68 |
Top Certificate Issuers
No TLS certs seen
scan_tls_certs doesn't yet contain a certificate whose SAN ends in .bio.
Top Hosting ASNs
No hosting attribution yet
Forward-DNS crawler hasn't resolved enough .bio apexes to BGP-attributable IPs.
Tech-Stack Distribution
No Wappalyzer detections
Body-fetcher hasn't covered enough .bio sites yet for stack patterns to emerge.
ℹ Coverage will improve significantly once CZDS zone-file access is granted for this TLD.