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.

9 hosts · 300 ms

HostCertsFirst seenLast seen
logosw.net 3 2025-10-14 2026-10-06
aide.logosw.net 7 2026-05-06 2026-09-01
echange.logosw.net 1 2025-10-02 2025-10-02
ai.logosw.net 5 2026-05-12 2026-08-30
services.logosw.net 4 2026-04-07 2026-09-28
sms.logosw.net 8 2026-03-06 2026-09-15
teletrans.logosw.net 5 2026-05-12 2026-08-31
support.logosw.net 4 2026-04-19 2026-08-17
www.logosw.net 3 2025-10-14 2026-10-06

Programmatic access: API GET /v1/hosts/logosw.net (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/logosw.net.