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.

9 hosts · 324 ms

HostCertsFirst seenLast seenDNS
lottusse.com 3 2025-07-17 2026-06-26 ok
*.lottusse.com 2 2025-07-17 2026-06-26 —
crm2.lottusse.com 8 2026-04-21 2026-08-19 ok
b2b.lottusse.com 1 2026-01-12 2026-01-12 ok
bi.lottusse.com 1 2026-02-02 2026-02-02 ok
cn.lottusse.com 6 2026-06-03 2026-10-01 ok
cdn.cn.lottusse.com 7 2026-02-28 2026-09-15 ok
do.lottusse.com 5 2026-05-21 2026-09-18 ok
www.lottusse.com 1 2026-01-14 2026-01-14 ok

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