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.

9 hosts · 368 ms

HostCertsFirst seenLast seen
seekasia.com 10 2025-08-07 2026-08-22
*.seekasia.com 10 2025-08-07 2026-08-22
staging.seekasia.com 19 2026-05-22 2026-09-18
*.staging.seekasia.com 9 2026-05-22 2026-09-17
edge-gantry-app.staging.seekasia.com 6 2026-05-22 2026-07-20
www.staging.seekasia.com 13 2026-05-22 2026-09-17
url8344.url.seekasia.com 2 2026-10-07 2026-10-07
edge-gantry-app.seekasia.com 8 2026-05-23 2026-07-21
www.seekasia.com 11 2026-05-21 2026-09-17

Programmatic access: API GET /v1/hosts/seekasia.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/seekasia.com.