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 · 202 ms

HostCertsFirst seenLast seen
onfy.de 2 2025-08-27 2026-07-28
*.onfy.de 2 2025-08-27 2026-07-28
mhd.onfy.de 2 2026-04-23 2026-04-23
hautpflege.onfy.de 8 2026-04-20 2026-08-16
babylone.onfy.de 1 2026-01-29 2026-01-29
*.babylone.onfy.de 1 2026-01-29 2026-01-29
verticals-menopause.onfy.de 1 2026-06-23 2026-06-23
hautpflegeprodukte.onfy.de 9 2026-05-29 2026-09-24
i.onfy.de 2 2026-04-12 2026-09-12
babylone-api.onfy.de 1 2026-01-29 2026-01-29
*.babylone-api.onfy.de 1 2026-01-29 2026-01-29
capital.onfy.de 4 2026-04-21 2026-08-23
email.onfy.de 7 2026-05-21 2026-10-03
medibiom.onfy.de 8 2026-06-13 2026-10-09
labs.onfy.de 2 2026-08-13 2026-08-13
is.onfy.de 2 2026-04-12 2026-09-12

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