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.

15 hosts · 272 ms

HostCertsFirst seenLast seenDNS
tenbin.ai 3 2025-07-07 2026-08-06 ok
*.tenbin.ai 11 2025-07-07 2026-09-16 —
api.stg.tenbin.ai 2 2026-05-26 2026-05-26 ok
mobile-api.tenbin.ai 2 2026-07-21 2026-07-21 ok
stg-mobile-api.tenbin.ai 2 2026-08-14 2026-08-14 ok
biz-mobile-api.tenbin.ai 2 2026-07-21 2026-07-21 ok
stg-biz-mobile-api.tenbin.ai 2 2026-08-14 2026-08-14 ok
sophia-prod.internal.tenbin.ai 1 2026-07-21 2026-07-21 nxdomain
metis-prod.internal.tenbin.ai 1 2026-07-21 2026-07-21 nxdomain
sophia-stg.internal.tenbin.ai 1 2026-05-26 2026-05-26 nxdomain
metis-stg.internal.tenbin.ai 1 2026-05-26 2026-05-26 nxdomain
graphql.tenbin.ai 3 2026-04-22 2026-09-22 ok
support.tenbin.ai 4 2026-04-20 2026-08-18 ok
www.tenbin.ai 1 2025-12-30 2025-12-30 ok
api.stg-biz.tenbin.ai 2 2026-05-26 2026-05-26 ok

Programmatic access, with DNS A records: API GET /v1/hosts/tenbin.ai (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/tenbin.ai.