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 · 283 ms

HostCertsFirst seenLast seenDNS
tradu.com 13 2025-12-29 2026-10-05 ok
*.tradu.com 10 2025-12-29 2026-10-03 —
wp-storage-qa.tradu.com 10 2026-04-13 2026-10-07 ok
authd.tradu.com 10 2026-05-01 2026-08-28 ok
wp-storage.tradu.com 9 2026-04-13 2026-10-07 ok
auth.tradu.com 10 2026-04-24 2026-08-21 ok
authi.tradu.com 10 2026-05-01 2026-08-27 ok
image.mail.tradu.com 1 2026-06-15 2026-06-15 ok
attachments.mail.tradu.com 7 2026-04-24 2026-10-05 nodata
*.email.tradu.com 11 2026-06-08 2026-10-03 —
authn.tradu.com 10 2026-05-01 2026-08-28 ok
authq.tradu.com 10 2026-04-30 2026-08-28 ok
autodiscover.tradu.com 7 2026-04-24 2026-10-05 ok
authgs.tradu.com 4 2026-04-23 2026-04-23 nodata
wp-storage-dev-test.tradu.com 10 2026-04-13 2026-08-10 ok
authu.tradu.com 10 2026-04-24 2026-08-21 ok
wp-storage-dev.tradu.com 8 2026-04-13 2026-10-07 ok

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