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.

7 hosts · 381 ms

HostCertsFirst seenLast seenDNS
exitlag.info 8 2026-05-22 2026-09-24 ok
*.exitlag.info 8 2026-05-22 2026-09-24 —
arise.exitlag.info 1 2026-05-06 2026-05-06 ok
api-arise.exitlag.info 1 2026-05-11 2026-05-11 ok
growthbook.exitlag.info 1 2026-05-11 2026-05-11 ok
api-growthbook.exitlag.info 1 2026-05-11 2026-05-11 ok
api-providers.exitlag.info 1 2026-05-11 2026-05-11 ok

Programmatic access, with DNS A records: API GET /v1/hosts/exitlag.info (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/exitlag.info.