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.

16 hosts · 270 ms

HostCertsFirst seenLast seen
nature-heart.de 25 2026-04-13 2026-09-28
*.nature-heart.de 7 2026-04-13 2026-09-28
2913739452.nature-heart.de 11 2026-06-02 2026-09-28
ip4.nature-heart.de 3 2026-07-10 2026-09-08
b2b.nature-heart.de 7 2026-05-03 2026-08-31
account.b2b.nature-heart.de 7 2026-05-04 2026-09-02
affiliate.nature-heart.de 5 2026-04-23 2026-08-21
kollagen.nature-heart.de 2 2026-05-13 2026-05-13
3521223996.kollagen.nature-heart.de 8 2026-05-15 2026-09-10
shop.nature-heart.de 12 2026-06-03 2026-10-01
2364639215.shop.nature-heart.de 10 2026-06-08 2026-10-05
account.nature-heart.de 13 2026-04-21 2026-10-02
script.nature-heart.de 3 2026-07-10 2026-09-08
ingest.nature-heart.de 3 2026-07-10 2026-09-08
v.nature-heart.de 6 2026-07-10 2026-09-07
www.nature-heart.de 13 2026-04-16 2026-09-29

Programmatic access: API GET /v1/hosts/nature-heart.de (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/nature-heart.de.