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 · 310 ms

HostCertsFirst seenLast seenDNS
wma.us 14 2026-05-08 2026-09-03 ok
*.wma.us 1 2026-06-03 2026-06-03 —
support.wma.us 5 2026-06-04 2026-10-03 ok
www.wma.us 23 2026-05-08 2026-09-04 ok

Programmatic access, with DNS A records: API GET /v1/hosts/wma.us (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/wma.us.