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.

13 hosts · 244 ms

HostCertsFirst seenLast seenDNS
metlife.pt 5 2025-12-12 2026-09-11 ok
customerservice.metlife.pt 3 2025-10-27 2026-06-27 ok
areadocliente.metlife.pt 13 2026-05-20 2026-09-17 ok
m.metlife.pt 6 2025-07-22 2025-12-10 ok
l.solucoes.metlife.pt 6 2026-05-11 2026-09-06 ok
x.solucoes.metlife.pt 10 2026-05-11 2026-09-07 ok
webclientes.metlife.pt 12 2025-07-01 2026-10-05 ok
sinistros.metlife.pt 9 2025-12-15 2026-08-07 ok
qa.sinistros.metlife.pt 9 2025-12-15 2026-08-07 nxdomain
seguros.metlife.pt 2 2025-09-01 2026-09-29 ok
www.metlife.pt 8 2025-07-22 2026-09-08 ok
greenap.www.metlife.pt 2 2025-10-14 2025-10-14 nxdomain
greenus.www.metlife.pt 2 2025-10-14 2025-10-14 nxdomain

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