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.

22 hosts · 439 ms

HostCertsFirst seenLast seenDNS
thefork.it 3 2025-07-17 2026-06-17 ok
*.thefork.it 3 2025-07-17 2026-06-17 —
thefork10.thefork.it 8 2026-05-06 2026-09-01 ok
uat1.thefork.it 2 2026-04-13 2026-06-17 ok
*.uat1.thefork.it 7 2026-04-13 2026-09-18 —
uat2.thefork.it 2 2026-04-13 2026-06-16 ok
*.uat2.thefork.it 7 2026-04-13 2026-09-18 —
uat3.thefork.it 3 2026-04-13 2026-06-17 ok
*.uat3.thefork.it 8 2026-04-13 2026-09-18 —
uat4.thefork.it 2 2026-04-13 2026-06-17 ok
*.uat4.thefork.it 9 2026-04-13 2026-09-30 —
thefork6.thefork.it 17 2026-05-31 2026-09-28 ok
preprod.thefork.it 3 2026-01-07 2026-06-29 ok
*.preprod.thefork.it 3 2026-01-07 2026-06-29 —
giftcard.thefork.it 1 2026-01-05 2026-01-05 ok
aziende.thefork.it 10 2026-04-14 2026-08-10 ok
mobile.thefork.it 2 2026-04-13 2026-09-13 ok
giftcardfestival.thefork.it 9 2026-05-30 2026-09-25 ok
chisiamo.thefork.it 1 2025-11-11 2025-11-11 ok
flashsales.thefork.it 8 2026-05-03 2026-08-29 ok
support.thefork.it 2 2026-05-04 2026-05-05 ok
blackfriday.thefork.it 8 2026-05-16 2026-09-12 ok

Programmatic access, with DNS A records: API GET /v1/hosts/thefork.it (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/thefork.it.