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.

6 hosts · 304 ms

HostCertsFirst seenLast seenDNS
vivus.lv 8 2026-05-04 2026-08-30 ok
*.vivus.lv 7 2025-08-18 2026-08-31 —
cola.vivus.lv 5 2026-04-24 2026-08-22 nodata
aiznemiesatbildigi.vivus.lv 8 2026-05-06 2026-09-01 ok
ej.vivus.lv 5 2026-05-20 2026-09-20 ok
www.vivus.lv 14 2026-05-19 2026-09-15 ok

Programmatic access, with DNS A records: API GET /v1/hosts/vivus.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/vivus.lv.