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.

4 hosts · 279 ms

HostCertsFirst seenLast seenDNS
havenmortgages.ie 3 2025-10-13 2026-06-17 ok
testDomain.havenmortgages.ie 1 2025-10-29 2025-10-29 —
ams.havenmortgages.ie 1 2026-05-19 2026-05-19 nxdomain
www.havenmortgages.ie 3 2025-10-13 2026-06-17 ok

Programmatic access, with DNS A records: API GET /v1/hosts/havenmortgages.ie (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/havenmortgages.ie.