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 · 396 ms

HostCertsFirst seenLast seenDNS
my-bmi.co.uk 20 2025-11-27 2026-09-24 ok
*.my-bmi.co.uk 19 2025-12-10 2026-09-24 —
app-api-staging.my-bmi.co.uk 1 2025-12-04 2025-12-04 ok
global-app-api-staging.my-bmi.co.uk 1 2025-12-04 2025-12-04 ok
lemur-staging.my-bmi.co.uk 1 2026-06-19 2026-06-19 ok
assets-staging.my-bmi.co.uk 1 2026-09-12 2026-09-12 nodata
app-api.my-bmi.co.uk 1 2025-12-04 2025-12-04 ok
global-app-api.my-bmi.co.uk 1 2025-12-04 2025-12-04 ok
consultation.my-bmi.co.uk 5 2025-08-27 2026-07-28 ok
staging-aws-consultation.my-bmi.co.uk 5 2025-06-19 2026-09-22 ok
*.consultation.my-bmi.co.uk 1 2026-02-04 2026-02-04 —
staging.consultation.my-bmi.co.uk 1 2026-02-04 2026-02-04 nodata
dev.consultation.my-bmi.co.uk 3 2025-06-20 2026-02-04 ok
info.my-bmi.co.uk 14 2026-06-03 2026-09-29 ok
api-staging.app.my-bmi.co.uk 1 2025-12-04 2025-12-04 nxdomain
api-global-staging.app.my-bmi.co.uk 1 2025-12-04 2025-12-04 nxdomain
api.app.my-bmi.co.uk 1 2025-12-04 2025-12-04 nxdomain
api-global.app.my-bmi.co.uk 1 2025-12-04 2025-12-04 nxdomain
lemur.my-bmi.co.uk 2 2026-05-21 2026-05-25 ok
support.my-bmi.co.uk 13 2026-05-12 2026-10-02 ok
assets-dev.my-bmi.co.uk 1 2026-09-12 2026-09-12 ok

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