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 · 259 ms

HostCertsFirst seenLast seenDNS
exotrail.com 10 2026-04-13 2026-08-10 ok
soteria.exotrail.com 4 2026-06-04 2026-10-03 ok
gitlab.exotrail.com 6 2026-05-20 2026-09-18 nodata
*.cc-svc.exotrail.com 4 2026-04-14 2026-08-13 —
forge.exotrail.com 5 2026-05-28 2026-09-25 servfail
welcome.exotrail.com 3 2026-05-17 2026-09-30 ok
cerbere.exotrail.com 5 2026-05-19 2026-09-17 ok
odoo-prom.exotrail.com 4 2026-06-04 2026-10-03 ok
cdn.exotrail.com 5 2026-06-04 2026-10-02 ok
odoo-mon.exotrail.com 4 2026-06-04 2026-10-03 ok
odoo.exotrail.com 5 2026-06-04 2026-10-02 servfail
sso.exotrail.com 5 2026-01-15 2026-10-02 ok
argos.exotrail.com 5 2026-05-16 2026-09-13 ok
careers.exotrail.com 12 2026-05-02 2026-09-24 ok
odoo-alert.exotrail.com 4 2026-06-04 2026-10-03 ok
www.exotrail.com 12 2026-04-14 2026-08-11 ok

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