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.

8 hosts · 264 ms

HostCertsFirst seenLast seenDNS
myrevair.com 13 2026-05-15 2026-09-27 ok
trk.myrevair.com 1 2026-01-06 2026-01-06 ok
forms.myrevair.com 6 2026-05-07 2026-09-03 ok
influencers.myrevair.com 2 2025-09-07 2026-08-08 ok
get.myrevair.com 2 2025-09-07 2026-08-08 ok
account.myrevair.com 14 2026-04-13 2026-08-24 ok
support.myrevair.com 8 2026-05-07 2026-09-02 ok
www.myrevair.com 15 2026-05-15 2026-09-25 ok

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