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.

17 hosts · 268 ms

HostCertsFirst seenLast seen
immotop.lu 1 2025-10-14 2025-10-14
*.immotop.lu 1 2025-10-14 2025-10-14
concourspaques2022.immotop.lu 5 2026-05-11 2026-09-06
dba.immotop.lu 4 2026-04-14 2026-08-12
projects.office.immotop.lu 3 2026-06-04 2026-08-20
dev.api.immotop.lu 4 2026-05-05 2026-07-29
photospro.immotop.lu 5 2026-05-16 2026-09-13
lasttestmaybe1.dev.mwp.immotop.lu 5 2026-05-16 2026-09-14
www.lasttestmaybe1.dev.mwp.immotop.lu 5 2026-05-15 2026-09-13
hoplaboom4.dev.mwp.immotop.lu 5 2026-05-17 2026-09-14
www.hoplaboom4.dev.mwp.immotop.lu 5 2026-05-16 2026-09-14
test5.dev.mwp.immotop.lu 5 2026-05-14 2026-09-11
abracadra.dev.mwp.immotop.lu 5 2026-05-17 2026-09-13
www.abracadra.dev.mwp.immotop.lu 5 2026-05-17 2026-09-13
cfapigw.immotop.lu 1 2026-02-03 2026-02-03
*.cfapigw.immotop.lu 1 2026-02-03 2026-02-03
cgapigw.immotop.lu 5 2026-05-28 2026-09-25

Programmatic access: API GET /v1/hosts/immotop.lu (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/immotop.lu.