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.

8 hosts · 172 ms

HostCertsFirst seenLast seen
zalando.pl 9 2025-06-30 2026-09-23
ankieta.zalando.pl 5 2026-04-18 2026-09-18
corporate.zalando.pl 2 2026-02-27 2026-07-15
exclusive.zalando.pl 11 2025-06-23 2026-09-20
clicks.hello.zalando.pl 1 2025-12-21 2025-12-21
images.zalando.pl 1 2025-12-07 2025-12-07
images-test.zalando.pl 1 2025-12-06 2025-12-06
www.zalando.pl 11 2025-06-23 2026-09-20

Programmatic access: API GET /v1/hosts/zalando.pl (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/zalando.pl.