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 · 257 ms

HostCertsFirst seenLast seenDNS
milliondollamotive.com 13 2026-05-16 2026-09-26 ok
email.send1.milliondollamotive.com 4 2026-04-15 2026-08-13 ok
email.mails1.milliondollamotive.com 4 2026-04-15 2026-08-13 ok
email.sender.milliondollamotive.com 5 2026-05-15 2026-09-12 ok
account.milliondollamotive.com 17 2026-05-14 2026-09-22 ok
www.milliondollamotive.com 15 2026-05-15 2026-09-26 ok

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