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 · 380 ms

HostCertsFirst seenLast seenDNS
turno.com 29 2026-04-15 2026-09-20 ok
*.turno.com 29 2026-04-15 2026-09-20 —
cloud.turno.com 20 2026-04-12 2026-09-20 nodata
*.cloud.turno.com 20 2026-04-12 2026-09-20 —
events.cloud.turno.com 3 2026-05-16 2026-09-03 nodata
*.events.cloud.turno.com 3 2026-05-16 2026-09-03 —
share.turno.com 1 2025-11-14 2025-11-14 ok
metabase.turno.com 5 2026-04-29 2026-08-04 ok
maui.turno.com 5 2026-04-28 2026-08-04 ok
go.turno.com 5 2026-05-21 2026-10-06 ok
apidocs.turno.com 5 2026-04-22 2026-08-20 ok
affiliates.turno.com 9 2025-11-16 2026-09-02 ok
ws.turno.com 2 2026-06-04 2026-06-04 nxdomain
www.ws.turno.com 2 2026-06-04 2026-06-04 nxdomain
chat.turno.com 4 2026-04-20 2026-08-21 ok
www.chat.turno.com 4 2026-04-20 2026-08-23 ok

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