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 · 289 ms

HostCertsFirst seenLast seenDNS
bend.com 28 2025-09-20 2026-10-02 ok
*.bend.com 20 2025-09-20 2026-10-02 —
*.web.bend.com 9 2026-05-03 2026-08-30 —
*.staging.web.bend.com 7 2026-06-12 2026-08-11 —
*.api.bend.com 9 2026-05-03 2026-08-30 —
*.web.api.bend.com 9 2026-05-03 2026-08-30 —
*.admin.api.bend.com 9 2026-05-03 2026-08-30 —
*.admin.bend.com 11 2025-09-20 2026-08-30 —
support.bend.com 3 2026-06-08 2026-08-07 ok
www.bend.com 10 2026-05-11 2026-09-09 ok

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