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.

8 hosts · 368 ms

HostCertsFirst seenLast seenDNS
medbox.com 11 2025-12-01 2026-08-13 ok
*.medbox.com 4 2025-06-29 2026-05-30 —
ph.medbox.com 2 2026-05-06 2026-05-06 ok
email.mail.medbox.com 5 2026-05-29 2026-09-26 ok
shop.medbox.com 17 2026-05-13 2026-09-22 ok
wintersoldier.medbox.com 1 2026-06-26 2026-06-26 ok
get.medbox.com 10 2026-04-17 2026-08-13 ok
www.medbox.com 4 2026-04-18 2026-04-19 ok

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