Check-Host.cc

Top-Level Domain

.com

Aggregated statistics for the top-level domain

Apex domains
81,285,477
we've enumerated
Subdomains seen
314,399,685
CT + DNS + brute
TLS certs
1,618,476
naming .com
Hosting ASNs
15
distinct origins

Domain Distribution

Apex domains with the most known subdomains — large orgs, telecoms, hosters.

Top Certificate Issuers

Issuer (CA) Certs
Let's Encrypt 416,390
Amazon 258,229
DigiCert 136,366
router.asus.com 72,049
Sectigo 66,622
Vigor Router 48,719
GoDaddy 40,514
YR2 37,054
YR1 36,871
WR3 29,658
YE2 23,198
YE1 23,026
GlobalSign 22,758
Cloudflare 17,090
example.com 14,228

Top Hosting ASNs

ASN Name .com domains
AS16509 Amazon.com 15,274,409
AS13335 Cloudflare 9,059,857
AS206834 4,549,921
AS396982 Google Cloud 2,020,048
AS53831 SQUARESPACE 1,790,140
AS14618 Amazon AES 1,701,167
AS20940 Akamai Technologies 1,424,208
AS47846 1,410,958
AS46606 Endurance International Group, Inc 1,383,735
AS40034 Confluence Networks 1,382,795
AS8075 Microsoft 1,308,707
AS47583 Hostinger International 1,236,948
AS61969 1,153,437
AS209242 Cloudflare London 1,092,186
AS24940 Hetzner Online 787,358

Tech-Stack Distribution

Technology Hosts
Plesk 1
Nginx 1
ℹ Coverage will improve significantly once CZDS zone-file access is granted for this TLD.