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 · 391 ms

HostCertsFirst seenLast seenDNS
lelynx.fr 2 2025-07-16 2026-07-08 ok
*.lelynx.fr 2 2025-07-16 2026-07-08 —
data.lelynx.fr 5 2026-05-02 2026-08-30 ok
recapitulatif.lelynx.fr 2 2026-03-30 2026-09-05 ok
www.recapitulatif.lelynx.fr 2 2026-03-30 2026-09-05 ok
emailing.lelynx.fr 2 2025-06-20 2026-06-18 ok
www.emailing.lelynx.fr 2 2025-06-20 2026-06-18 ok
enedis-homologation.lelynx.fr 1 2025-10-21 2025-10-21 nodata
www.enedis-homologation.lelynx.fr 1 2025-10-21 2025-10-21 nxdomain
information.lelynx.fr 1 2026-01-19 2026-01-19 ok
www.information.lelynx.fr 1 2026-01-19 2026-01-19 ok
enedis-production.lelynx.fr 1 2025-10-15 2025-10-15 nodata
www.enedis-production.lelynx.fr 1 2025-10-15 2025-10-15 nxdomain
bonjour.lelynx.fr 1 2026-01-19 2026-01-19 ok
www.bonjour.lelynx.fr 1 2026-01-19 2026-01-19 ok

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