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.

5 hosts · 316 ms

HostCertsFirst seenLast seenDNS
homewardtitle.com 8 2026-05-18 2026-09-13 ok
mta-sts.homewardtitle.com 4 2026-04-23 2026-09-12 ok
www.homewardtitle.com 6 2026-05-02 2026-08-29 ok
pay.homewardtitle.com 2 2026-04-13 2026-06-13 ok
www.pay.homewardtitle.com 2 2026-04-13 2026-06-13 nxdomain

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