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.

25 hosts · 265 ms

HostCertsFirst seenLast seenDNS
mail001.boursorama.fr 1 2026-01-09 2026-01-09 ok
pwcasarray001.boursorama.fr 1 2025-10-21 2025-10-21 nxdomain
mail101.boursorama.fr 1 2026-01-09 2026-01-09 ok
pwcasarray101.boursorama.fr 1 2025-10-21 2025-10-21 nxdomain
sso-cls1.boursorama.fr 3 2025-08-18 2026-08-05 nxdomain
vpngp2.boursorama.fr 2 2025-07-12 2026-07-09 ok
vpngpr2.boursorama.fr 4 2026-03-23 2026-09-15 ok
sso-cls1.infrara.boursorama.fr 3 2025-08-18 2026-08-05 nxdomain
sso.infrara.boursorama.fr 4 2026-03-20 2026-09-16 ok
vpngp.infrara.boursorama.fr 2 2025-07-12 2026-07-09 nxdomain
nomade-sec.boursorama.fr 2 2026-03-17 2026-09-18 ok
nomade.boursorama.fr 2 2026-03-17 2026-09-18 nxdomain
messaging.boursorama.fr 1 2025-10-21 2025-10-21 nxdomain
prd-tuf-oca-api.boursorama.fr 5 2026-06-03 2026-09-28 ok
prd-pfm-api.boursorama.fr 1 2026-01-22 2026-01-22 nxdomain
val-pfm-api.boursorama.fr 1 2026-01-22 2026-01-22 nxdomain
dev-pfm-api.boursorama.fr 1 2026-01-22 2026-01-22 nxdomain
interpel.boursorama.fr 2 2026-01-05 2026-01-06 ok
webmail.boursorama.fr 1 2025-10-21 2025-10-21 ok
sso.boursorama.fr 4 2026-03-20 2026-09-16 ok
vpngp.boursorama.fr 2 2025-07-12 2026-07-09 ok
*.vpngp.boursorama.fr 2 2025-07-12 2026-07-09 —
autodiscover.boursorama.fr 1 2025-10-21 2025-10-21 ok
vpngpr.boursorama.fr 4 2026-03-23 2026-09-15 ok
*.vpngpr.boursorama.fr 4 2026-03-23 2026-09-15 —

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