Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

11 hosts · 224 ms

HostCertsFirst seenLast seen
engie.ro 1 2025-12-04 2025-12-04
*.engie.ro 1 2025-12-04 2025-12-04
auth.engie.ro 8 2026-04-16 2026-08-13
testauth.engie.ro 10 2026-05-11 2026-09-07
devauth.engie.ro 10 2026-05-08 2026-09-04
cloud.clienti.engie.ro 3 2025-07-16 2026-07-17
image.clienti.engie.ro 4 2025-06-28 2026-01-05
click.clienti.engie.ro 3 2025-07-16 2026-07-20
view.clienti.engie.ro 3 2025-07-16 2026-07-16
eassist.engie.ro 3 2026-02-19 2026-10-03
testeassist.engie.ro 3 2026-02-22 2026-10-06

Programmatic access: API GET /v1/hosts/engie.ro (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/engie.ro.