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.

10 hosts · 305 ms

HostCertsFirst seenLast seenDNS
unboxrobotics.com 33 2025-07-25 2026-09-05 ok
*.unboxrobotics.com 29 2025-07-25 2026-09-05 —
gitlab.unboxrobotics.com 3 2026-05-08 2026-08-04 ok
registry.gitlab.unboxrobotics.com 3 2026-05-08 2026-08-04 ok
backup-web.unboxrobotics.com 3 2026-06-16 2026-08-15 ok
go.unboxrobotics.com 5 2026-05-01 2026-08-27 ok
goto.unboxrobotics.com 5 2026-05-20 2026-09-17 ok
trust-vault.unboxrobotics.com 5 2026-05-23 2026-09-20 ok
teleport.unboxrobotics.com 1 2026-09-30 2026-09-30 ok
www.unboxrobotics.com 4 2026-05-20 2026-07-20 ok

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