Check-Host.cc

Top-Level Domain

.com

Aggregated statistics for the top-level domain

Apex domains
81,209,311
we've enumerated
Subdomains seen
314,015,413
CT + DNS + brute
TLS certs
1,616,706
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 416,230
Amazon 258,207
DigiCert 136,183
router.asus.com 71,990
Sectigo 66,552
Vigor Router 48,658
GoDaddy 40,482
YR2 36,845
YR1 36,690
WR3 29,600
YE2 23,079
YE1 22,932
GlobalSign 22,735
Cloudflare 17,062
example.com 14,227

Top Hosting ASNs

ASN Name .com domains
AS16509 Amazon.com 15,248,494
AS13335 Cloudflare 9,046,759
AS206834 4,547,262
AS396982 Google Cloud 2,016,574
AS53831 SQUARESPACE 1,787,204
AS14618 Amazon AES 1,698,780
AS20940 Akamai Technologies 1,423,261
AS47846 1,409,973
AS46606 Endurance International Group, Inc 1,378,862
AS40034 Confluence Networks 1,377,889
AS8075 Microsoft 1,307,597
AS47583 Hostinger International 1,234,670
AS61969 1,152,185
AS209242 Cloudflare London 1,090,901
AS24940 Hetzner Online 785,937

Tech-Stack Distribution

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