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.

16 hosts · 270 ms

HostCertsFirst seenLast seen
ploom.pl 32 2026-05-12 2026-09-21
*.ploom.pl 16 2026-05-12 2026-09-07
eva.ploom.pl 18 2026-05-09 2026-09-05
gcc.ploom.pl 5 2026-05-23 2026-09-20
opinie.ploom.pl 17 2026-04-21 2026-08-17
m1.mail.ploom.pl 20 2026-05-21 2026-09-16
res1.mail.ploom.pl 21 2026-05-23 2026-09-18
t1.mail.ploom.pl 22 2026-05-22 2026-09-17
res5.mail.ploom.pl 14 2026-05-22 2026-09-17
t5.mail.ploom.pl 14 2026-05-22 2026-09-17
m6.mail.ploom.pl 14 2026-05-22 2026-09-17
res6.mail.ploom.pl 16 2026-05-22 2026-09-18
t6.mail.ploom.pl 16 2026-05-23 2026-09-19
order.ploom.pl 16 2026-06-07 2026-10-03
sms.ploom.pl 4 2026-04-15 2026-08-11
www.ploom.pl 14 2026-05-28 2026-09-23

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