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.

9 hosts · 205 ms

HostCertsFirst seenLast seenDNS
laflutedepan.com 1 2026-04-14 2026-04-14 ok
r.mail2.laflutedepan.com 5 2026-04-24 2026-10-01 ok
digital.laflutedepan.com 1 2026-04-14 2026-04-14 ok
img.mail.laflutedepan.com 10 2026-04-29 2026-08-25 ok
r.mail.laflutedepan.com 3 2026-06-16 2026-09-04 ok
img.notification.laflutedepan.com 7 2026-05-31 2026-09-26 ok
r.notification.laflutedepan.com 3 2026-06-06 2026-08-25 ok
intranet.laflutedepan.com 3 2026-05-25 2026-09-10 ok
www.laflutedepan.com 1 2026-04-14 2026-04-14 ok

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