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.

6 hosts · 278 ms

HostCertsFirst seenLast seenDNS
crawfordsprinkler-sc.com 27 2026-04-26 2026-09-18 ok
*.crawfordsprinkler-sc.com 10 2026-05-13 2026-09-13 —
bimi.crawfordsprinkler-sc.com 2 2026-08-03 2026-08-03 ok
mta-sts.crawfordsprinkler-sc.com 10 2026-05-14 2026-09-18 ok
*.mta-sts.crawfordsprinkler-sc.com 10 2026-05-14 2026-09-18 —
www.crawfordsprinkler-sc.com 7 2026-04-26 2026-08-26 ok

Programmatic access, with DNS A records: API GET /v1/hosts/crawfordsprinkler-sc.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/crawfordsprinkler-sc.com.