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.

16 hosts · 234 ms

HostCertsFirst seenLast seenDNS
quebec-cite.com 7 2025-11-18 2026-09-04 ok
*.quebec-cite.com 7 2025-11-18 2026-09-04 —
clic.quebec-cite.com 5 2026-05-26 2026-09-23 ok
academie.quebec-cite.com 21 2026-04-26 2026-09-11 ok
lwmail.academie.quebec-cite.com 5 2026-05-26 2026-09-23 ok
borne.quebec-cite.com 6 2026-04-10 2026-09-05 ok
explore.quebec-cite.com 8 2026-04-10 2026-09-14 ok
img.quebec-cite.com 12 2026-02-06 2026-10-04 ok
click.quebec-cite.com 5 2026-05-26 2026-09-23 ok
portail.quebec-cite.com 8 2026-04-16 2026-08-13 ok
academie-en.quebec-cite.com 25 2026-05-10 2026-09-22 ok
destination.quebec-cite.com 5 2026-05-12 2026-09-10 ok
academie-fr.quebec-cite.com 24 2026-04-16 2026-09-25 ok
images.quebec-cite.com 1 2025-11-18 2025-11-18 ok
meetings.quebec-cite.com 1 2025-11-18 2025-11-18 ok
www.quebec-cite.com 1 2025-11-18 2025-11-18 ok

Programmatic access, with DNS A records: API GET /v1/hosts/quebec-cite.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/quebec-cite.com.