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.

16 hosts · 281 ms

HostCertsFirst seenLast seenDNS
ecg.camp 13 2025-11-03 2026-08-27 ok
*.ecg.camp 16 2026-01-19 2026-08-27 —
one.ecg.camp 42 2026-05-18 2026-10-05 ok
ecgone.ecg.camp 3 2026-05-18 2026-09-02 ok
signature.ecg.camp 5 2026-05-24 2026-10-05 ok
oneecg.ecg.camp 3 2026-05-13 2026-08-30 ok
asset-register.staging.ecg.camp 4 2026-05-13 2026-07-21 ok
pwpush.ecg.camp 46 2026-06-26 2026-10-04 ok
api.ecg.camp 1 2026-06-22 2026-06-22 ok
www.api.ecg.camp 1 2026-06-22 2026-06-22 nxdomain
bastion.ecg.camp 1 2026-07-02 2026-07-02 ok
vpn.ecg.camp 3 2026-01-09 2026-01-12 ok
app.ecg.camp 1 2026-02-23 2026-02-23 ok
appsftp.ecg.camp 5 2026-05-24 2026-09-21 ok
ws.ecg.camp 4 2025-07-10 2026-06-25 ok
www.ws.ecg.camp 2 2026-06-25 2026-06-25 nxdomain

Programmatic access, with DNS A records: API GET /v1/hosts/ecg.camp (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/ecg.camp.