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.

17 hosts · 309 ms

HostCertsFirst seenLast seenDNS
viama.one 2 2026-06-01 2026-08-27 ok
canva.viama.one 2 2026-05-24 2026-05-24 ok
www.canva.viama.one 4 2026-05-24 2026-05-24 nxdomain
mittelstand.viama.one 1 2026-04-15 2026-04-15 —
compliancemittelstand.viama.one 1 2026-04-15 2026-04-15 —
complianceguard.viama.one 4 2026-05-01 2026-07-01 ok
staging.complianceguard.viama.one 4 2026-05-04 2026-07-05 nxdomain
executive.viama.one 3 2026-07-05 2026-08-19 ok
green.viama.one 4 2026-06-04 2026-10-02 ok
tower.viama.one 2 2026-05-22 2026-05-22 ok
8uhr.viama.one 1 2026-09-21 2026-09-21 ok
www.8uhr.viama.one 1 2026-09-21 2026-09-21 nxdomain
downloads.viama.one 1 2026-04-15 2026-04-15 —
sales.viama.one 4 2026-05-14 2026-07-15 ok
campus.viama.one 8 2026-05-09 2026-09-19 ok
su.viama.one 5 2026-05-21 2026-09-22 ok
www.viama.one 2 2026-06-01 2026-08-27 ok

Programmatic access, with DNS A records: API GET /v1/hosts/viama.one (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/viama.one.