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 · 279 ms

HostCertsFirst seenLast seenDNS
roberthalf.cn 12 2025-12-16 2026-09-22 ok
*.roberthalf.cn 12 2025-12-16 2026-09-22 —
rafpsh.roberthalf.cn 1 2026-02-09 2026-02-09 ok
www.rafpsh.roberthalf.cn 1 2026-02-09 2026-02-09 nxdomain
aem-qs1.np.roberthalf.cn 12 2026-04-10 2026-10-04 ok
aem-ut1.np.roberthalf.cn 10 2026-04-16 2026-08-12 ok
aem-dev1.np.roberthalf.cn 11 2026-06-07 2026-10-03 ok
aem-qs2.np.roberthalf.cn 12 2026-04-15 2026-08-11 ok
aem-qs3.np.roberthalf.cn 10 2026-04-15 2026-08-11 ok
aem-dev3.np.roberthalf.cn 14 2026-04-09 2026-10-03 ok
aem-qs4.np.roberthalf.cn 14 2026-05-22 2026-09-17 ok
aem-dev4.np.roberthalf.cn 16 2026-04-09 2026-10-04 ok
aem-qs5.np.roberthalf.cn 12 2026-04-16 2026-08-13 ok
aem-dev5.np.roberthalf.cn 10 2026-06-07 2026-10-03 ok
aem-pre-prod.np.roberthalf.cn 10 2026-04-21 2026-08-17 ok
aem-stg.np.roberthalf.cn 10 2026-04-14 2026-08-11 ok
tags.roberthalf.cn 2 2025-07-02 2026-06-02 ok
collect.roberthalf.cn 2 2025-07-02 2026-06-02 ok
www.roberthalf.cn 11 2026-05-28 2026-09-23 ok

Programmatic access, with DNS A records: API GET /v1/hosts/roberthalf.cn (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/roberthalf.cn.