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.

15 hosts · 313 ms

HostCertsFirst seenLast seenDNS
astridandmiyu.com 40 2026-05-06 2026-10-04 ok
*.astridandmiyu.com 24 2026-05-06 2026-10-04 —
clickom.de.astridandmiyu.com 2 2025-09-24 2026-08-25 ok
qoqzf.astridandmiyu.com 10 2026-05-08 2026-09-03 ok
mi.astridandmiyu.com 2 2026-03-04 2026-07-20 ok
clickom.astridandmiyu.com 2 2025-09-24 2026-08-25 ok
ssgtm.astridandmiyu.com 3 2026-05-15 2026-08-30 ok
help.astridandmiyu.com 8 2026-05-14 2026-09-09 ok
us.astridandmiyu.com 4 2026-06-05 2026-10-02 ok
account.astridandmiyu.com 17 2026-05-04 2026-09-14 ok
us.account.astridandmiyu.com 11 2026-05-04 2026-09-12 ok
eu.account.astridandmiyu.com 13 2026-05-04 2026-09-14 ok
eu.astridandmiyu.com 4 2026-04-14 2026-08-12 ok
www.astridandmiyu.com 15 2026-05-18 2026-09-29 ok
community.astridandmiyu.com 6 2026-06-30 2026-08-23 ok

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