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 · 203 ms

HostCertsFirst seenLast seen
ploom.pt 29 2026-04-25 2026-09-21
*.ploom.pt 17 2026-04-25 2026-08-30
eva.ploom.pt 16 2026-04-19 2026-08-15
gcc.ploom.pt 5 2026-04-26 2026-08-24
m1.mail.ploom.pt 21 2026-06-06 2026-10-02
res1.mail.ploom.pt 12 2026-06-08 2026-10-05
t1.mail.ploom.pt 15 2026-06-06 2026-10-02
res5.mail.ploom.pt 16 2026-05-22 2026-09-18
t5.mail.ploom.pt 10 2026-05-22 2026-09-17
m6.mail.ploom.pt 16 2026-05-22 2026-09-17
res6.mail.ploom.pt 20 2026-05-22 2026-09-17
t6.mail.ploom.pt 10 2026-05-22 2026-09-17
retail.ploom.pt 20 2026-04-27 2026-09-14
m1.info.ploom.pt 14 2026-06-07 2026-10-03
res1.info.ploom.pt 19 2026-06-06 2026-10-02
t1.info.ploom.pt 14 2026-06-06 2026-10-02
res5.info.ploom.pt 21 2026-05-22 2026-09-17
t5.info.ploom.pt 10 2026-05-22 2026-09-17
m6.info.ploom.pt 14 2026-05-22 2026-09-17
res6.info.ploom.pt 12 2026-05-22 2026-09-18
t6.info.ploom.pt 21 2026-05-22 2026-09-17
order.ploom.pt 12 2026-06-06 2026-10-03
www.ploom.pt 15 2026-05-26 2026-09-21

Programmatic access: API GET /v1/hosts/ploom.pt (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.pt.