Check-Host.cc

Top-Level Domain

.com

Aggregated statistics for the top-level domain

Apex domains
81,332,919
we've enumerated
Subdomains seen
314,654,300
CT + DNS + brute
TLS certs
1,619,538
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 416,481
Amazon 258,244
DigiCert 136,483
router.asus.com 72,085
Sectigo 66,653
Vigor Router 48,748
GoDaddy 40,532
YR2 37,154
YR1 36,991
WR3 29,703
YE2 23,258
YE1 23,100
GlobalSign 22,778
Cloudflare 17,104
example.com 14,236

Top Hosting ASNs

ASN Name .com domains
AS16509 Amazon.com 15,289,168
AS13335 Cloudflare 9,068,054
AS206834 4,551,461
AS396982 Google Cloud 2,022,204
AS53831 SQUARESPACE 1,792,045
AS14618 Amazon AES 1,702,626
AS20940 Akamai Technologies 1,424,538
AS47846 1,411,418
AS40034 Confluence Networks 1,385,663
AS46606 Endurance International Group, Inc 1,385,551
AS8075 Microsoft 1,309,865
AS47583 Hostinger International 1,238,225
AS61969 1,154,050
AS209242 Cloudflare London 1,093,119
AS24940 Hetzner Online 787,897

Tech-Stack Distribution

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