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 · 249 ms

HostCertsFirst seenLast seenDNS
roberthalf.fr 1 2026-01-28 2026-01-28 ok
*.roberthalf.fr 1 2026-01-28 2026-01-28 —
c6-1evo-dzwebserver-alb-prod.evolia-prod.roberthalf.fr 1 2026-02-11 2026-02-11 ok
c6-1evo-dsnserver-alb-prod.evolia-prod.roberthalf.fr 1 2026-02-11 2026-02-11 ok
bh.roberthalf.fr 1 2026-02-11 2026-02-11 ok
dsn-next-rh.roberthalf.fr 1 2026-02-11 2026-02-11 ok
www.m.roberthalf.fr 1 2026-01-28 2026-01-28 ok
tags.roberthalf.fr 2 2025-07-02 2026-06-02 ok
collect.roberthalf.fr 2 2025-07-02 2026-06-02 ok
bh.evolia-test.roberthalf.fr 1 2026-01-18 2026-01-18 nxdomain
c6-2evo-dzwebserver-alb-test.evolia-test.roberthalf.fr 1 2026-01-18 2026-01-18 ok
c6-2evo-dsnserver-nlb-test.evolia-test.roberthalf.fr 1 2026-01-18 2026-01-18 ok
dsn-next.evolia-test.roberthalf.fr 1 2026-01-18 2026-01-18 nxdomain
bh-test.roberthalf.fr 1 2026-01-18 2026-01-18 ok
dsn-next-test.roberthalf.fr 1 2026-01-18 2026-01-18 ok

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