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.

13 hosts · 195 ms

HostCertsFirst seenLast seen
backmarket.pt 34 2026-05-10 2026-09-30
*.backmarket.pt 18 2026-05-10 2026-09-30
preprod.backmarket.pt 16 2026-05-19 2026-09-14
*.preprod.backmarket.pt 16 2026-05-19 2026-09-14
clicks.pro-e.backmarket.pt 6 2026-05-11 2026-09-06
dse.backmarket.pt 10 2026-04-19 2026-08-15
*.dse.backmarket.pt 10 2026-04-19 2026-08-15
ppr.backmarket.pt 16 2026-05-19 2026-09-14
*.int.backmarket.pt 16 2026-05-19 2026-09-14
*.dev.backmarket.pt 16 2026-05-19 2026-09-14
www.backmarket.pt 16 2026-05-19 2026-09-14
story.backmarket.pt 16 2026-05-19 2026-09-14
staging.story.backmarket.pt 16 2026-05-19 2026-09-14

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