Check-Host.cc

Top-Level Domain

.app

Aggregated statistics for the top-level domain

Apex domains
we've enumerated
Subdomains seen
CT + DNS + brute
TLS certs
25,609
naming .app
Hosting ASNs
distinct origins

Domain Distribution

No apex enumerations

No subdomain discoveries yet for .app. Our CT-log + DNS-brute crawlers populate this as they pick up domains.

Top Certificate Issuers

Issuer (CA) Certs
Let's Encrypt 9,587
Amazon 6,399
WR3 1,979
YE1 1,097
YE2 1,000
YR1 877
YR2 847
Cloudflare 811
Sectigo 741
ZeroSSL 655
GoDaddy 477
DigiCert 284
GlobalSign 153
Certum 32
LiteSSL 31

Top Hosting ASNs

No hosting attribution yet

Forward-DNS crawler hasn't resolved enough .app apexes to BGP-attributable IPs.

Tech-Stack Distribution

No Wappalyzer detections

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

Threat-intel hits

Feed Category Domains
openphish phishing 1,910
ℹ Coverage will improve significantly once CZDS zone-file access is granted for this TLD.