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.

11 hosts · 289 ms

HostCertsFirst seenLast seenDNS
metlife.it 5 2025-12-12 2026-09-11 ok
areaclientiqa.metlife.it 25 2025-09-24 2026-09-29 nxdomain
areaclienti.metlife.it 16 2025-07-01 2026-09-17 ok
ssologin.metlife.it 1 2025-12-09 2025-12-09 nodata
qa.ssologin.metlife.it 1 2025-12-10 2025-12-10 ok
shop.metlife.it 9 2025-12-15 2026-08-07 ok
autodiscover.metlife.it 2 2026-05-12 2026-05-14 ok
areaclientiuat.metlife.it 22 2025-10-23 2026-09-29 nxdomain
www.metlife.it 8 2025-07-22 2026-09-08 ok
greenap.www.metlife.it 2 2025-10-14 2025-10-14 nxdomain
greenus.www.metlife.it 2 2025-10-14 2025-10-14 nxdomain

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