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.

21 hosts · 219 ms

HostCertsFirst seenLast seen
heine.at 2 2026-04-11 2026-09-11
*.heine.at 7 2025-09-01 2026-09-25
*.prod.wcc.heine.at 2 2025-06-24 2026-05-25
api.prod.wcc.heine.at 5 2026-05-09 2026-09-06
cdn.wcc.heine.at 2 2026-02-24 2026-07-12
cdn-test.wcc.heine.at 1 2025-12-28 2025-12-28
*.test.wcc.heine.at 2 2025-08-25 2026-07-26
api.test.wcc.heine.at 5 2026-05-21 2026-09-18
shop.test.wcc.heine.at 4 2026-04-20 2026-08-18
d.heine.at 11 2025-07-08 2026-09-27
www.d.heine.at 1 2025-07-08 2025-07-08
store.heine.at 2 2025-07-09 2026-06-09
te.heine.at 3 2025-12-29 2026-08-28
snbwyi.heine.at 3 2026-05-23 2026-10-09
m.heine.at 14 2025-12-17 2026-10-10
info.heine.at 1 2025-10-21 2025-10-21
www.info.heine.at 1 2025-10-21 2025-10-21
wasp.heine.at 4 2026-04-19 2026-09-25
tp.heine.at 2 2026-01-20 2026-08-28
link-news.heine.at 5 2026-05-18 2026-09-14
wst.heine.at 5 2026-05-05 2026-10-14

Programmatic access: API GET /v1/hosts/heine.at (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/heine.at.