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.

11 hosts · 258 ms

HostCertsFirst seenLast seenDNS
finemarkbank.com 15 2026-04-11 2026-10-01 ok
*.finemarkbank.com 10 2026-04-11 2026-09-14 —
grafana.finemarkbank.com 3 2026-06-23 2026-09-14 nodata
clark.finemarkbank.com 1 2026-01-21 2026-01-21 nxdomain
email.finemarkbank.com 10 2026-05-05 2026-10-02 ok
go.finemarkbank.com 10 2026-04-28 2026-09-25 ok
jump.finemarkbank.com 5 2026-06-23 2026-09-27 nodata
graymatter.finemarkbank.com 3 2026-06-23 2026-09-14 ok
ir.finemarkbank.com 2 2026-05-04 2026-05-04 nxdomain
event.finemarkbank.com 10 2026-04-28 2026-09-25 ok
www.finemarkbank.com 5 2026-06-03 2026-10-01 ok

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