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 · 275 ms

HostCertsFirst seenLast seen
jdgyms.co.uk 6 2026-06-18 2026-10-08
*.jdgyms.co.uk 1 2026-06-18 2026-06-18
help.jdgyms.co.uk 8 2026-05-07 2026-09-02
rewards.jdgyms.co.uk 2 2026-08-28 2026-08-28
pt.jdgyms.co.uk 4 2026-06-10 2026-10-08
www.jdgyms.co.uk 10 2026-04-19 2026-06-17
pyzcrjuz.jdgyms.co.uk 2 2026-08-07 2026-10-06
load.pyzcrjuz.jdgyms.co.uk 5 2026-08-07 2026-10-05

Programmatic access: API GET /v1/hosts/jdgyms.co.uk (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/jdgyms.co.uk.