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.

13 hosts · 326 ms

HostCertsFirst seenLast seenDNS
brucepac.com 5 2025-09-02 2026-09-24 ok
*.brucepac.com 1 2025-10-09 2025-10-09 —
bpvpn01.brucepac.com 2 2026-04-03 2026-09-24 ok
www.bpvpn01.brucepac.com 1 2026-04-03 2026-04-03 nxdomain
bpvpn41.brucepac.com 4 2025-06-09 2026-07-31 ok
www.bpvpn41.brucepac.com 3 2025-06-09 2026-05-01 nxdomain
bpvpn02.brucepac.com 1 2026-06-10 2026-06-10 ok
www.bpvpn02.brucepac.com 1 2026-06-10 2026-06-10 nxdomain
bpvpn42.brucepac.com 2 2026-05-01 2026-07-08 ok
www.bpvpn42.brucepac.com 1 2026-05-01 2026-05-01 nxdomain
desktopcentral.brucepac.com 3 2025-10-20 2026-10-06 nxdomain
www.desktopcentral.brucepac.com 2 2025-10-20 2025-10-20 nxdomain
www.brucepac.com 4 2025-09-02 2026-09-24 ok

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