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 · 297 ms

HostCertsFirst seenLast seen
thomas-philipps.de 26 2025-06-24 2026-09-26
*.thomas-philipps.de 21 2025-06-24 2026-09-19
fg20.thomas-philipps.de 5 2026-04-29 2026-08-27
traefik02.thomas-philipps.de 2 2026-05-18 2026-05-18
fg16.thomas-philipps.de 4 2026-04-21 2026-08-19
fg19.thomas-philipps.de 5 2026-05-29 2026-09-26
tpaid.thomas-philipps.de 24 2026-04-23 2026-10-08
*.tpaid.thomas-philipps.de 17 2026-05-22 2026-10-08
traefik-prod.thomas-philipps.de 2 2026-05-19 2026-05-19
karriere.thomas-philipps.de 5 2026-04-27 2026-08-15
archive.thomas-philipps.de 9 2026-05-30 2026-09-25
gewinnspiel.thomas-philipps.de 1 2026-09-14 2026-09-14
tippspiel.thomas-philipps.de 6 2026-04-18 2026-09-05
marktpartner-werden.thomas-philipps.de 1 2026-09-23 2026-09-23
cms.thomas-philipps.de 4 2026-06-04 2026-09-23
news.thomas-philipps.de 1 2025-11-18 2025-11-18
www.news.thomas-philipps.de 1 2025-11-18 2025-11-18
t.thomas-philipps.de 4 2026-06-05 2026-10-03
development.thomas-philipps.de 11 2026-04-27 2026-09-23
oktoberfest.thomas-philipps.de 5 2026-04-28 2026-08-26
www.thomas-philipps.de 9 2026-05-31 2026-09-26
postfix.thomas-philipps.de 19 2026-04-30 2026-10-06
*.postfix.thomas-philipps.de 9 2026-05-30 2026-10-06

Programmatic access: API GET /v1/hosts/thomas-philipps.de (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/thomas-philipps.de.