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.

14 hosts · 285 ms

HostCertsFirst seenLast seenDNS
inextenso-innovation.fr 8 2026-02-02 2026-08-12 ok
*.inextenso-innovation.fr 1 2026-02-02 2026-02-02 —
calendrier-ilab.inextenso-innovation.fr 5 2026-05-14 2026-09-12 ok
preprod.inextenso-innovation.fr 4 2026-04-14 2026-08-12 ok
mail.inextenso-innovation.fr 6 2026-05-09 2026-09-06 ok
eye.mail.inextenso-innovation.fr 6 2026-05-09 2026-09-06 ok
img.mail.inextenso-innovation.fr 6 2026-05-09 2026-09-06 ok
click.mail.inextenso-innovation.fr 6 2026-05-10 2026-09-07 ok
landings.mail.inextenso-innovation.fr 6 2026-05-09 2026-09-06 ok
forms.mail.inextenso-innovation.fr 6 2026-05-09 2026-09-06 ok
enterpriseregistration.inextenso-innovation.fr 2 2025-11-19 2026-06-08 ok
mta-sts.inextenso-innovation.fr 5 2026-05-23 2026-09-20 ok
projet.inextenso-innovation.fr 4 2026-04-13 2026-08-11 ok
www.inextenso-innovation.fr 4 2026-04-13 2026-08-12 ok

Programmatic access, with DNS A records: API GET /v1/hosts/inextenso-innovation.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/inextenso-innovation.fr.