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.

15 hosts · 243 ms

HostCertsFirst seenLast seenDNS
fortuneo.com 8 2025-09-09 2026-09-30 ok
sca-openbanking.fortuneo.com 1 2026-05-13 2026-05-13 ok
www.sca-openbanking.fortuneo.com 1 2026-05-13 2026-05-13 nxdomain
api-openbanking.fortuneo.com 1 2026-01-08 2026-01-08 ok
api.fortuneo.com 5 2026-04-03 2026-09-30 ok
www.api.fortuneo.com 2 2026-06-11 2026-09-30 nxdomain
cashback-plus.fortuneo.com 1 2026-05-28 2026-05-28 ok
pp-cashback-plus.fortuneo.com 1 2026-05-28 2026-05-28 ok
www.pp-cashback-plus.fortuneo.com 1 2026-05-28 2026-05-28 nxdomain
www.cashback-plus.fortuneo.com 1 2026-05-28 2026-05-28 nxdomain
*.contact.fortuneo.com 2 2025-07-12 2026-06-12 —
*.contact-dev.fortuneo.com 2 2025-07-12 2026-06-12 —
api-sandbox.fortuneo.com 1 2026-01-08 2026-01-08 ok
api.sandbox.fortuneo.com 1 2026-03-03 2026-03-03 ok
www.api.sandbox.fortuneo.com 1 2026-03-03 2026-03-03 nxdomain

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