Find every subdomain
of a domain.

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

11 hosts · 359 ms

HostCertsFirst seenLast seenDNS
sohnne.com 32 2026-04-27 2026-10-01 ok
*.sohnne.com 20 2026-05-08 2026-10-01 —
rtshpvva.sohnne.com 5 2026-05-30 2026-09-27 ok
e.sohnne.com 10 2026-04-29 2026-08-25 ok
affiliate.sohnne.com 4 2026-04-10 2026-08-08 ok
feedback.sohnne.com 7 2026-07-03 2026-08-31 ok
*.feedback.sohnne.com 7 2026-07-03 2026-08-31 —
cdn.sohnne.com 1 2026-02-15 2026-02-15 ok
shop.sohnne.com 19 2026-04-27 2026-08-27 ok
affiliator.sohnne.com 5 2026-05-22 2026-09-25 ok
www.sohnne.com 4 2026-04-27 2026-06-28 ok

Programmatic access, with DNS A records: API GET /v1/hosts/sohnne.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/sohnne.com.