Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

5 hosts · 277 ms

HostCertsFirst seenLast seenDNS
ilajordan.com 2 2025-09-21 2026-08-22 ok
*.ilajordan.com 2 2025-09-21 2026-08-22 —
abc-cash-auth.ilajordan.com 3 2025-08-13 2026-07-14 ok
dev.ilajordan.com 2 2025-09-29 2026-08-30 ok
*.dev.ilajordan.com 2 2025-09-29 2026-08-30 —

Programmatic access, with DNS A records: API GET /v1/hosts/ilajordan.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/ilajordan.com.