Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

24 hosts · 208 ms

HostCertsFirst seenLast seen
audible.ca 6 2025-11-04 2026-08-20
arya-pacman-sandbox-na-1.audible.ca 3 2025-08-21 2026-06-04
apx-security-ca.audible.ca 2 2026-03-26 2026-08-11
sansa.audible.ca 4 2025-08-26 2026-07-27
aquatic.audible.ca 4 2025-10-30 2026-07-17
api-preprod.audible.ca 2 2025-11-11 2026-07-13
ace.audible.ca 3 2025-10-30 2026-07-11
mobile.audible.ca 3 2026-03-25 2026-08-20
feature.audible.ca 2 2025-10-30 2026-06-15
api.audible.ca 2 2025-09-24 2026-07-24
origin-api.audible.ca 2 2025-09-24 2026-07-24
tracking.mail.audible.ca 3 2025-10-10 2026-08-12
arya-pacman.audible.ca 4 2025-08-27 2026-08-13
help.audible.ca 2 2025-08-26 2025-12-09
r.audible.ca 5 2025-08-25 2026-09-21
cds.audible.ca 3 2025-09-24 2026-07-09
origin-cds.audible.ca 3 2025-09-24 2026-07-09
sonos.audible.ca 3 2025-09-24 2026-07-02
origin-sonos.audible.ca 3 2025-09-24 2026-07-02
tracking.t.audible.ca 2 2026-03-12 2026-08-12
arya-next.audible.ca 4 2025-08-01 2026-07-02
www.audible.ca 3 2025-11-04 2026-08-11
origin-www.audible.ca 3 2025-11-04 2026-08-11
syncdelivery.audible.ca 5 2025-11-04 2026-07-28

Programmatic access: API GET /v1/hosts/audible.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/audible.ca.