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.

22 hosts · 304 ms

HostCertsFirst seenLast seen
gaiia.com 13 2025-08-19 2026-10-08
*.gaiia.com 1 2026-06-22 2026-06-22
payvalida-webhook-staging.gaiia.com 1 2025-12-28 2025-12-28
clientvpn-staging.gaiia.com 2 2025-07-06 2026-06-06
api.stytch.gaiia.com 8 2026-04-23 2026-08-19
api.gaiia.com 1 2026-01-18 2026-01-18
docs.api.gaiia.com 2 2026-02-22 2026-07-10
payvalida-webhook-production.gaiia.com 1 2025-12-28 2025-12-28
clientvpn-production.gaiia.com 2 2025-07-06 2026-06-06
app.gaiia.com 6 2025-06-14 2026-08-26
sftp.gaiia.com 2 2026-03-11 2026-07-27
disaster.gaiia.com 2 2026-03-24 2026-08-24
clientvpn-disaster.gaiia.com 2 2026-02-22 2026-07-10
analytics.gaiia.com 4 2026-04-20 2026-08-14
files.gaiia.com 1 2026-05-04 2026-05-04
staging.files.gaiia.com 1 2026-05-04 2026-05-04
status.gaiia.com 5 2026-04-29 2026-08-26
workflows.gaiia.com 2 2025-07-28 2026-06-28
staging.workflows.gaiia.com 2 2025-08-25 2026-07-26
support.gaiia.com 4 2026-06-08 2026-10-06
trust.gaiia.com 16 2026-05-28 2026-09-24
www.gaiia.com 13 2025-08-19 2026-08-13

Programmatic access: API GET /v1/hosts/gaiia.com (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/gaiia.com.