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.

11 hosts · 298 ms

HostCertsFirst seenLast seenDNS
neotax.eu 15 2026-04-20 2026-09-24 ok
*.neotax.eu 12 2026-04-20 2026-09-24 —
wiki.neotax.eu 3 2026-05-05 2026-09-02 ok
www.wiki.neotax.eu 3 2026-05-05 2026-09-02 ok
app.neotax.eu 5 2026-05-21 2026-09-18 ok
partner.neotax.eu 8 2026-04-26 2026-09-29 ok
blog-test.neotax.eu 1 2026-09-18 2026-09-18 ok
grav.neotax.eu 4 2026-04-23 2026-08-21 ok
www.grav.neotax.eu 4 2026-04-23 2026-08-21 ok
dev.neotax.eu 3 2026-05-04 2026-07-03 ok
www.neotax.eu 3 2026-05-04 2026-07-03 ok

Programmatic access, with DNS A records: API GET /v1/hosts/neotax.eu (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/neotax.eu.