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.

19 hosts · 157 ms

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HostCertsFirst seenLast seen
spirit.tt 3 2025-10-04 2026-09-17
*.spirit.tt 3 2025-10-04 2026-09-17
gex-prp-ise01.spirit.tt 2 2025-10-27 2025-10-27
espprvise1.spirit.tt 2 2025-10-27 2025-10-27
dcprvk2app1.spirit.tt 1 2025-10-31 2025-10-31
dctsvk2app1.spirit.tt 1 2025-10-31 2025-10-31
k2.spirit.tt 1 2025-10-31 2025-10-31
dc-pv-ise03.spirit.tt 2 2026-09-15 2026-09-15
www.dc-pv-ise03.spirit.tt 2 2026-09-15 2026-09-15
dc-pv-ise04.spirit.tt 2 2026-09-15 2026-09-15
www.dc-pv-ise04.spirit.tt 2 2026-09-15 2026-09-15
sp4ise.spirit.tt 2 2026-01-06 2026-02-11
www.sp4ise.spirit.tt 2 2026-01-06 2026-02-11
sp5ise.spirit.tt 1 2026-01-06 2026-01-06
www.sp5ise.spirit.tt 1 2026-01-06 2026-01-06
k2api.spirit.tt 1 2025-10-31 2025-10-31
k2uatapi.spirit.tt 1 2025-10-31 2025-10-31
ibp.spirit.tt 1 2025-10-31 2025-10-31
k2uat.spirit.tt 1 2025-10-31 2025-10-31

Programmatic access: API GET /v1/hosts/spirit.tt (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/spirit.tt.