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 · 304 ms

HostCertsFirst seenLast seenDNS
ibexinsure.com 5 2026-04-30 2026-08-28 ok
ipoffice.ibexinsure.com 2 2025-10-08 2025-10-23 ok
www.ipoffice.ibexinsure.com 2 2025-10-08 2025-10-23 nxdomain
mail.ibexinsure.com 1 2026-04-27 2026-04-27 ok
www.mail.ibexinsure.com 1 2026-04-27 2026-04-27 nxdomain
email.ibexinsure.com 5 2026-06-04 2026-10-02 ok
autodiscover.ibexinsure.com 1 2026-04-27 2026-04-27 ok
intranet.ibexinsure.com 1 2025-12-31 2025-12-31 ok
www.intranet.ibexinsure.com 1 2025-12-31 2025-12-31 nxdomain
www.ibexinsure.com 5 2026-04-30 2026-08-28 ok

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