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.

25 hosts · 236 ms

HostCertsFirst seenLast seenDNS
metlife.cz 5 2025-12-12 2026-09-11 ok
ismet-admin-pprod.metlife.cz 4 2026-08-18 2026-09-29 nxdomain
ismet-eap-pprod.metlife.cz 3 2025-08-21 2026-08-24 ok
ismet-pprod.metlife.cz 1 2026-09-29 2026-09-29 ok
portalnewprod.metlife.cz 1 2025-09-25 2025-09-25 nxdomain
portal.metlife.cz 10 2025-10-14 2026-08-07 ok
ismet-admin-testsm.metlife.cz 4 2026-08-18 2026-09-29 nxdomain
ismet-testsm.metlife.cz 1 2025-11-21 2025-11-21 ok
ssologin.metlife.cz 2 2025-12-31 2026-05-18 ok
qa.ssologin.metlife.cz 1 2025-12-10 2025-12-10 nxdomain
ismet-admin.metlife.cz 4 2026-08-17 2026-09-17 nxdomain
ismet-eap.metlife.cz 10 2025-12-15 2026-08-07 ok
oslrp.metlife.cz 3 2025-08-08 2026-08-10 ok
portalnewuat.metlife.cz 2 2025-10-30 2025-12-03 nxdomain
ismet.metlife.cz 11 2025-09-11 2026-09-21 ok
ismet-admin-test.metlife.cz 4 2026-08-18 2026-09-29 nxdomain
ismet-eap-test.metlife.cz 3 2025-08-21 2026-08-24 ok
oslrp-test.metlife.cz 3 2025-08-08 2026-08-10 nxdomain
ismet-test.metlife.cz 16 2025-11-21 2026-09-29 ok
epostatest.metlife.cz 1 2025-10-17 2025-10-17 ok
portaltest.metlife.cz 2 2026-03-25 2026-09-10 ok
portalnewtest.metlife.cz 2 2025-10-30 2025-12-03 nxdomain
www.metlife.cz 8 2025-07-22 2026-09-08 ok
greenap.www.metlife.cz 2 2025-10-14 2025-10-14 nxdomain
greenus.www.metlife.cz 2 2025-10-14 2025-10-14 nxdomain

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