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.

3 hosts · 237 ms

HostCertsFirst seenLast seenDNS
ikea.ph 9 2026-05-19 2026-09-14 ok
go.ikea.ph 14 2026-06-05 2026-10-01 ok
www.ikea.ph 8 2026-04-14 2026-08-10 ok

Programmatic access, with DNS A records: API GET /v1/hosts/ikea.ph (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/ikea.ph.