Check-Host.cc

Top-Level Domain

.su

Aggregated statistics for the top-level domain

Apex domains
30,951
we've enumerated
Subdomains seen
206,395
CT + DNS + brute
TLS certs
2,968
naming .su
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 1,603
GlobalSign 244
YE1 233
YE2 217
YR2 211
YR1 211
Cloudflare 22
DigiCert 9
centos7-x64.ipserver.su 6
Sectigo (Comodo) 6
Sectigo 5
AlphaSSL CA - SHA256 - G2 5
Russian Trusted Sub CA 3
AlphaSSL CA - SHA256 - G4 3
WR1 3

Top Hosting ASNs

ASN Name .su domains
AS197695 11,670
AS206834 8,928
AS29182 JSC IOT 6,644
AS57724 DDoS-Guard.net main network 4,930
AS9123 JSC TimeWeb 4,518
AS24940 Hetzner Online 3,673
AS198610 BeGet 3,144
AS13335 Cloudflare 1,822
AS48287 RU-CENTER AS48287 1,578
AS49505 Selectel Ltd. 1,211
AS57043 HOSTKEY B.V. 891
AS8342 RTCOMM 719
AS29076 Filanco AS29076 673
AS12616 584
AS200350 Yandex Cloud 561

Tech-Stack Distribution

No Wappalyzer detections

Body-fetcher hasn't covered enough .su sites yet for stack patterns to emerge.

Threat-intel hits

Feed Category Domains
openphish phishing 4
ℹ Coverage will improve significantly once CZDS zone-file access is granted for this TLD.