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.

19 hosts · 282 ms

HostCertsFirst seenLast seenDNS
condenast.it 25 2025-07-28 2026-09-10 ok
*.condenast.it 24 2025-07-28 2026-09-10 —
link.condenast.it 6 2026-04-23 2026-08-21 ok
adportal.condenast.it 7 2026-05-11 2026-08-29 ok
advportal.condenast.it 7 2026-05-11 2026-08-29 ok
nl.condenast.it 5 2026-05-25 2026-09-07 ok
cninsights.condenast.it 3 2025-09-25 2026-08-26 nodata
media.cninsights.condenast.it 3 2025-09-24 2026-08-25 nodata
stage.cninsights.condenast.it 3 2025-09-24 2026-08-25 nodata
media.stage.cninsights.condenast.it 3 2025-09-24 2026-08-25 nodata
api.stage.cninsights.condenast.it 2 2025-09-24 2026-08-25 ok
www.stage.cninsights.condenast.it 3 2025-09-24 2026-08-25 nxdomain
api.cninsights.condenast.it 2 2025-09-24 2026-08-25 ok
dev.cninsights.condenast.it 3 2025-09-24 2026-08-25 nodata
media.dev.cninsights.condenast.it 3 2025-09-24 2026-08-25 nodata
api.dev.cninsights.condenast.it 2 2025-09-24 2026-08-25 ok
www.dev.cninsights.condenast.it 3 2025-09-24 2026-08-25 nxdomain
www.cninsights.condenast.it 3 2025-09-25 2026-08-26 nxdomain
*.socialtalentagency.condenast.it 2 2025-07-28 2026-06-28 —

Programmatic access, with DNS A records: API GET /v1/hosts/condenast.it (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/condenast.it.