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.

16 hosts · 344 ms

HostCertsFirst seenLast seenDNS
qanapi.com 35 2026-04-12 2026-10-06 ok
*.qanapi.com 8 2026-05-27 2026-09-24 —
karstlandscape.qanapi.com 2 2026-10-02 2026-10-02 ok
cdn.qanapi.com 10 2026-05-01 2026-08-27 ok
learn.qanapi.com 10 2026-05-12 2026-09-07 ok
corp.qanapi.com 2 2026-08-05 2026-08-05 nodata
access.corp.qanapi.com 1 2026-08-05 2026-08-05 nodata
labs.qanapi.com 4 2026-04-20 2026-08-23 ok
safetyculture.labs.qanapi.com 3 2026-06-12 2026-08-14 ok
clerk.labs.qanapi.com 11 2026-06-04 2026-10-01 ok
accounts.labs.qanapi.com 12 2026-06-05 2026-10-01 ok
docs.qanapi.com 5 2026-05-29 2026-09-29 ok
partners.qanapi.com 3 2026-10-02 2026-10-02 ok
chat.qanapi.com 5 2026-04-25 2026-08-29 ok
www.qanapi.com 6 2026-05-05 2026-08-31 ok
ai-gateway.qanapi.com 14 2026-04-12 2026-10-06 ok

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