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.

21 hosts · 191 ms

HostCertsFirst seenLast seen
www3.colonialfirststate.com.au 4 2026-03-25 2026-09-23
data.service.colonialfirststate.com.au 2 2026-05-17 2026-05-17
cdn.service.colonialfirststate.com.au 2 2026-03-15 2026-08-15
secure.colonialfirststate.com.au 2 2026-01-14 2026-01-14
update.colonialfirststate.com.au 5 2026-05-17 2026-09-20
www3.stg.colonialfirststate.com.au 4 2026-02-25 2026-09-18
www.stg.colonialfirststate.com.au 4 2026-02-25 2026-09-18
secure.fcstg.colonialfirststate.com.au 1 2026-02-24 2026-02-24
www.fcstg.colonialfirststate.com.au 1 2026-02-24 2026-02-24
data.ajostg.colonialfirststate.com.au 2 2026-05-16 2026-05-16
web.ajostg.colonialfirststate.com.au 2 2026-05-20 2026-05-20
cdn.ajostg.colonialfirststate.com.au 2 2026-03-15 2026-08-15
firsttech.colonialfirststate.com.au 4 2026-03-25 2026-09-23
image.edm.colonialfirststate.com.au 2 2025-09-18 2026-08-24
help.colonialfirststate.com.au 4 2026-03-25 2026-09-23
stg.help.colonialfirststate.com.au 4 2026-02-25 2026-09-18
data.campaigns.colonialfirststate.com.au 2 2026-05-16 2026-05-16
web.campaigns.colonialfirststate.com.au 2 2026-05-21 2026-05-21
cdn.campaigns.colonialfirststate.com.au 2 2026-03-15 2026-08-15
event.colonialfirststate.com.au 4 2026-04-12 2026-08-16
www.colonialfirststate.com.au 6 2026-01-14 2026-09-23

Programmatic access: API GET /v1/hosts/colonialfirststate.com.au (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/colonialfirststate.com.au.