Find every subdomain
of a domain.

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

23 hosts · 194 ms

HostCertsFirst seenLast seen
pitax.pl 1 2026-03-09 2026-03-09
*.pitax.pl 1 2026-03-09 2026-03-09
grafana.pitax.pl 4 2026-04-12 2026-08-10
inst.pomoc.pitax.pl 5 2026-05-01 2026-09-03
www.pomoc.pitax.pl 4 2026-08-10 2026-10-02
bird.pitax.pl 1 2026-09-13 2026-09-13
px-gitlab-01.bird.pitax.pl 2 2026-09-13 2026-09-13
fabryka.bird.pitax.pl 2 2026-09-30 2026-09-30
mjetek.bird.pitax.pl 2 2026-09-16 2026-09-16
mjagus.bird.pitax.pl 2 2026-09-25 2026-09-25
pitax-dev.bird.pitax.pl 2 2026-09-23 2026-09-23
jmiskiewicz-pitax.bird.pitax.pl 2 2026-09-25 2026-09-25
inwestycje.pitax.pl 4 2026-04-16 2026-09-09
secure.pitax.pl 4 2026-04-21 2026-08-18
www.secure.pitax.pl 4 2026-04-21 2026-08-18
program.pitax.pl 4 2026-04-12 2026-08-11
www.program.pitax.pl 4 2026-04-12 2026-08-11
portainer.pitax.pl 4 2026-04-12 2026-08-10
git.pitax.pl 5 2026-05-24 2026-09-22
grafana-test.pitax.pl 6 2026-06-04 2026-10-02
portainer-test.pitax.pl 6 2026-06-04 2026-10-02
secure2.eu.pitax.pl 3 2026-05-05 2026-08-17
secure.eu.pitax.pl 3 2026-05-05 2026-08-17

Programmatic access: API GET /v1/hosts/pitax.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/pitax.pl.