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.

21 hosts · 367 ms

HostCertsFirst seenLast seenDNS
bakerross.co.uk 57 2026-01-29 2026-09-15 ok
*.bakerross.co.uk 25 2026-01-29 2026-09-15 —
mcstaging2.bakerross.co.uk 4 2026-04-21 2026-08-19 ok
y63wi6ma.bakerross.co.uk 7 2026-05-21 2026-09-16 ok
mcprod.bakerross.co.uk 8 2026-04-23 2026-08-22 ok
*.preprod.bakerross.co.uk 12 2026-05-15 2026-09-10 —
remote.bakerross.co.uk 1 2026-02-01 2026-02-01 ok
www.remote.bakerross.co.uk 1 2026-02-01 2026-02-01 nxdomain
mcstaging.bakerross.co.uk 5 2026-05-02 2026-08-30 ok
metrics-mcstaging.bakerross.co.uk 1 2026-04-29 2026-04-29 ok
segmentapi.bakerross.co.uk 19 2026-05-09 2026-09-24 ok
cargdk.bakerross.co.uk 2 2026-05-13 2026-07-22 ok
trk.bakerross.co.uk 6 2026-04-23 2026-08-19 ok
48fjerl.bakerross.co.uk 3 2026-05-20 2026-09-07 ok
vpn.bakerross.co.uk 8 2025-07-25 2026-08-13 nxdomain
www.vpn.bakerross.co.uk 8 2025-07-25 2026-08-13 nxdomain
wp.bakerross.co.uk 10 2026-04-18 2026-08-14 ok
*.uat.bakerross.co.uk 12 2026-05-15 2026-09-10 —
segment.bakerross.co.uk 25 2026-05-09 2026-09-25 ok
www.bakerross.co.uk 8 2026-04-23 2026-08-22 ok
sagepay.bakerross.co.uk 1 2026-02-01 2026-02-01 ok

Programmatic access, with DNS A records: API GET /v1/hosts/bakerross.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/bakerross.co.uk.