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.

15 hosts · 256 ms

HostCertsFirst seenLast seen
backmarket.sk 33 2026-04-20 2026-09-27
*.backmarket.sk 33 2026-04-20 2026-09-27
preprod.backmarket.sk 13 2026-05-20 2026-09-15
*.preprod.backmarket.sk 13 2026-05-20 2026-09-15
clicks.pro-e.backmarket.sk 6 2026-05-11 2026-09-06
dse.backmarket.sk 8 2026-04-19 2026-08-15
*.dse.backmarket.sk 8 2026-04-19 2026-08-15
ppr.backmarket.sk 13 2026-05-20 2026-09-15
tr.backmarket.sk 13 2026-05-20 2026-09-15
payment.backmarket.sk 6 2026-05-01 2026-08-27
*.payment.backmarket.sk 6 2026-05-01 2026-08-27
*.int.backmarket.sk 13 2026-05-20 2026-09-15
*.dev.backmarket.sk 13 2026-05-20 2026-09-15
story.backmarket.sk 13 2026-05-20 2026-09-15
staging.story.backmarket.sk 13 2026-05-20 2026-09-15

Programmatic access: API GET /v1/hosts/backmarket.sk (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/backmarket.sk.