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.

11 hosts · 247 ms

Download CSV
HostCertsFirst seenLast seen
optibet.lv 9 2026-05-11 2026-09-07
*.optibet.lv 9 2026-05-11 2026-09-07
go.optibet.lv 2 2026-08-06 2026-10-04
sports-app.optibet.lv 8 2026-05-12 2026-09-07
poker.optibet.lv 10 2026-05-12 2026-09-07
*.poker.optibet.lv 10 2026-05-12 2026-09-07
apis.optibet.lv 3 2026-05-21 2026-09-07
mta-sts.optibet.lv 1 2026-02-04 2026-02-04
content.optibet.lv 9 2026-06-11 2026-10-07
int.optibet.lv 21 2026-04-28 2026-09-04
*.int.optibet.lv 21 2026-04-28 2026-09-04

Programmatic access: API GET /v1/hosts/optibet.lv (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/optibet.lv.