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 · 324 ms

HostCertsFirst seenLast seenDNS
wakers.fr 5 2026-06-09 2026-10-02 ok
sbc-01.wakers.fr 1 2026-01-04 2026-01-04 ok
*.sbc-01.wakers.fr 1 2026-01-04 2026-01-04 —
sbc-02.wakers.fr 1 2025-11-03 2025-11-03 ok
*.sbc-02.wakers.fr 1 2025-11-03 2025-11-03 —
grafana.wakers.fr 9 2026-04-25 2026-08-16 ok
marketplace.wakers.fr 6 2026-06-03 2026-10-01 ok
marketplace.paris.wakers.fr 5 2026-05-15 2026-09-17 ok
csp.paris.wakers.fr 3 2026-05-23 2026-10-05 ok
www.wakers.fr 5 2026-06-09 2026-10-02 ok
zabbix.wakers.fr 7 2026-04-25 2026-08-16 ok

Programmatic access, with DNS A records: API GET /v1/hosts/wakers.fr (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/wakers.fr.