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.

15 hosts · 302 ms

HostCertsFirst seenLast seenDNS
m3.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
res3.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
t3.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
m4.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
res4.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
t4.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
m15.notifications.loccitane.com 2 2025-07-06 2026-06-06 nxdomain
res15.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
t15.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
m18.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
res18.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
t18.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
m19.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
res19.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok
t19.notifications.loccitane.com 2 2025-07-06 2026-06-06 ok

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