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 · 289 ms

HostCertsFirst seenLast seenDNS
acubiz.com 28 2026-01-15 2026-09-30 ok
*.acubiz.com 28 2026-01-15 2026-09-30 —
brand.acubiz.com 10 2026-04-22 2026-08-17 ok
admin-stage.acubiz.com 2 2026-02-25 2026-07-15 ok
app-stage.acubiz.com 2 2026-02-11 2026-07-05 ok
support-mtime.acubiz.com 4 2026-04-18 2026-08-16 ok
*.internal.acubiz.com 15 2026-04-13 2026-09-10 —
*.web.internal.acubiz.com 5 2026-05-26 2026-09-23 —
gtm.acubiz.com 5 2026-06-02 2026-09-30 ok
load.gtm.acubiz.com 13 2026-05-31 2026-09-26 ok
admin.acubiz.com 3 2026-04-16 2026-08-11 ok
support-intern.acubiz.com 4 2026-04-18 2026-08-16 ok
support-compello.acubiz.com 4 2026-04-18 2026-08-16 ok
app.acubiz.com 3 2026-04-09 2026-08-11 ok
careers.acubiz.com 10 2026-04-21 2026-09-24 ok
support.acubiz.com 4 2026-04-18 2026-08-16 ok
admin-test.acubiz.com 2 2026-02-28 2026-07-18 ok
app-test.acubiz.com 2 2026-02-19 2026-07-10 ok
admin-dev.acubiz.com 2 2026-02-14 2026-07-07 ok
app-dev.acubiz.com 2 2026-02-28 2026-07-18 ok
www.acubiz.com 10 2026-06-16 2026-08-15 ok

Programmatic access, with DNS A records: API GET /v1/hosts/acubiz.com (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/acubiz.com.