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.

17 hosts · 210 ms

Download CSV
HostCertsFirst seenLast seen
tapsell.de 23 2026-05-22 2026-10-15
*.tapsell.de 11 2026-05-22 2026-10-15
data01.tapsell.de 5 2026-05-17 2026-09-14
db01.tapsell.de 5 2026-05-13 2026-09-10
reg01.tapsell.de 2 2026-04-30 2026-04-30
srv01.tapsell.de 5 2026-05-15 2026-09-10
data02.tapsell.de 5 2026-05-17 2026-09-14
db02.tapsell.de 5 2026-05-01 2026-08-28
srv02.tapsell.de 5 2026-05-15 2026-09-11
data.tapsell.de 10 2026-05-14 2026-09-18
ac.tapsell.de 6 2026-07-10 2026-09-07
share.tapsell.de 6 2026-05-04 2026-05-11
n8n.tapsell.de 14 2026-04-30 2026-09-12
repo.tapsell.de 4 2026-08-12 2026-10-11
meet.tapsell.de 1 2026-08-25 2026-08-25
www.tapsell.de 13 2026-06-03 2026-09-30
mx.tapsell.de 7 2026-05-14 2026-09-11

Programmatic access: API GET /v1/hosts/tapsell.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/tapsell.de.