Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

7 hosts · 224 ms

HostCertsFirst seenLast seen
lampenwelt.com 5 2026-05-09 2026-09-06
kafka.esb.lampenwelt.com 2 2026-02-25 2026-07-13
binary.esb.lampenwelt.com 2 2026-03-10 2026-07-26
kafka.esb-public.lampenwelt.com 3 2026-04-09 2026-09-09
corporate.lampenwelt.com 5 2026-05-21 2026-09-18
news.lampenwelt.com 4 2026-04-17 2026-08-15
www.lampenwelt.com 5 2026-05-09 2026-09-06

Programmatic access: API GET /v1/hosts/lampenwelt.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/lampenwelt.com.