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.

19 hosts · 269 ms

HostCertsFirst seenLast seenDNS
amisgest.ca 28 2026-03-27 2026-09-11 ok
*.amisgest.ca 29 2026-02-05 2026-09-11 —
temp01.amisgest.ca 2 2026-06-26 2026-06-26 nxdomain
ecole02.amisgest.ca 2 2026-03-08 2026-07-24 ok
app03.amisgest.ca 2 2025-08-30 2026-07-31 ok
media.amisgest.ca 2 2025-06-22 2026-05-22 ok
aide.amisgest.ca 6 2026-05-27 2026-08-07 ok
sondage.amisgest.ca 8 2026-04-10 2026-08-08 ok
ecole.amisgest.ca 2 2026-04-11 2026-09-11 ok
classe.amisgest.ca 10 2026-05-08 2026-09-06 ok
boutique.amisgest.ca 8 2026-04-11 2026-08-09 ok
connexion.amisgest.ca 3 2025-09-15 2026-08-15 ok
erp.amisgest.ca 2 2026-07-08 2026-07-08 ok
carrieres.amisgest.ca 9 2026-04-10 2026-08-09 ok
gadget.amisgest.ca 2 2025-10-24 2026-09-24 ok
espaceclient.amisgest.ca 10 2026-05-19 2026-09-16 ok
abonnement.amisgest.ca 20 2026-04-29 2026-09-17 ok
iot.amisgest.ca 1 2026-01-11 2026-01-11 ok
support.amisgest.ca 8 2026-04-16 2026-08-14 ok

Programmatic access, with DNS A records: API GET /v1/hosts/amisgest.ca (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/amisgest.ca.