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.

19 hosts · 305 ms

HostCertsFirst seenLast seenDNS
dmarcmanager.app 5 2026-03-11 2026-08-14 ok
*.dmarcmanager.app 1 2026-03-11 2026-03-11 —
bimi.sa.dmarcmanager.app 6 2026-04-23 2026-09-30 nodata
web.dmarcmanager.app 5 2026-06-01 2026-09-29 ok
m.dmarcmanager.app 5 2026-05-20 2026-09-17 ok
bimi2.ap.dmarcmanager.app 3 2026-05-18 2026-09-03 ok
bimi.ap.dmarcmanager.app 3 2026-05-23 2026-09-09 ok
perimeter.dmarcmanager.app 1 2026-06-10 2026-06-10 ok
devops.dmarcmanager.app 2 2026-06-17 2026-06-17 ok
sa-devops.dmarcmanager.app 3 2026-06-26 2026-08-18 ok
ap-devops.dmarcmanager.app 2 2026-07-06 2026-09-01 ok
eu-devops.dmarcmanager.app 2 2026-07-15 2026-09-09 ok
mta-sts.dmarcmanager.app 6 2026-04-21 2026-09-30 ok
deployment.dmarcmanager.app 4 2026-04-16 2026-08-14 ok
sa-export.dmarcmanager.app 3 2026-05-20 2026-09-05 ok
ap-export.dmarcmanager.app 3 2026-05-21 2026-09-05 ok
eu-export.dmarcmanager.app 3 2026-05-26 2026-09-14 ok
bimi.eu.dmarcmanager.app 6 2026-05-20 2026-09-07 ok
www.dmarcmanager.app 4 2026-04-16 2026-08-14 ok

Programmatic access, with DNS A records: API GET /v1/hosts/dmarcmanager.app (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/dmarcmanager.app.