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.

12 hosts · 241 ms

HostCertsFirst seenLast seenDNS
angelinos.com 21 2026-04-24 2026-09-29 ok
*.angelinos.com 10 2026-04-24 2026-09-29 —
trk.send.angelinos.com 10 2026-04-26 2026-08-23 ok
dashboard.angelinos.com 2 2026-08-16 2026-08-16 ok
tracking.angelinos.com 1 2026-02-14 2026-02-14 ok
i.angelinos.com 4 2026-05-27 2026-09-13 ok
ssapi.angelinos.com 3 2026-05-15 2026-09-02 ok
go.angelinos.com 10 2026-05-11 2026-09-07 ok
shop.angelinos.com 15 2026-04-13 2026-09-26 ok
account.angelinos.com 15 2026-05-08 2026-09-20 ok
checkout.angelinos.com 4 2026-04-20 2026-08-19 ok
www.angelinos.com 13 2026-05-08 2026-09-17 ok

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