Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

20 hosts · 264 ms

HostCertsFirst seenLast seenDNS
wincasino.pl 15 2026-04-11 2026-10-06 ok
*.wincasino.pl 11 2026-04-11 2026-10-06 —
warszawa.wincasino.pl 4 2026-04-16 2026-08-14 ok
qr.warszawa.wincasino.pl 4 2026-04-16 2026-08-14 ok
sosnowiec.wincasino.pl 4 2026-04-16 2026-08-14 ok
qr.sosnowiec.wincasino.pl 4 2026-04-16 2026-08-14 ok
tarnobrzeg.wincasino.pl 4 2026-04-16 2026-08-14 ok
qr.tarnobrzeg.wincasino.pl 4 2026-04-16 2026-08-14 ok
link.mail.wincasino.pl 3 2026-04-12 2026-04-12 nxdomain
*.link.mail.wincasino.pl 3 2026-04-12 2026-04-12 —
n.mail.wincasino.pl 2 2026-04-11 2026-04-13 nxdomain
*.n.mail.wincasino.pl 2 2026-04-11 2026-04-13 —
link.info.wincasino.pl 15 2026-04-22 2026-08-20 ok
*.link.info.wincasino.pl 15 2026-04-22 2026-08-20 —
n.info.wincasino.pl 10 2026-04-22 2026-09-08 ok
*.n.info.wincasino.pl 10 2026-04-22 2026-09-08 —
krakow.wincasino.pl 4 2026-04-16 2026-08-14 ok
qr.krakow.wincasino.pl 4 2026-04-16 2026-08-14 ok
tarnow.wincasino.pl 4 2026-04-16 2026-08-14 ok
qr.tarnow.wincasino.pl 4 2026-04-16 2026-08-14 ok

Programmatic access, with DNS A records: API GET /v1/hosts/wincasino.pl (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/wincasino.pl.