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 · 239 ms

HostCertsFirst seenLast seenDNS
mnacommunity.com 4 2026-03-26 2026-08-26 ok
*.mnacommunity.com 8 2026-03-09 2026-08-26 —
link.mnacommunity.com 5 2026-04-23 2026-08-20 ok

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