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.

4 hosts · 276 ms

HostCertsFirst seenLast seenDNS
cloud.e.avantiwestcoast.co.uk 2 2025-07-14 2026-07-01 ok
image.e.avantiwestcoast.co.uk 3 2025-06-11 2026-06-29 ok
click.e.avantiwestcoast.co.uk 2 2025-07-14 2026-07-02 ok
view.e.avantiwestcoast.co.uk 2 2025-07-14 2026-07-01 ok

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