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 · 347 ms

HostCertsFirst seenLast seenDNS
nbcf.org.au 18 2026-05-21 2026-09-16 ok
join.squatchallenge.nbcf.org.au 5 2026-05-15 2026-09-16 ok
fundraise.nbcf.org.au 1 2026-06-24 2026-06-24 ok
merchandise.nbcf.org.au 13 2026-05-16 2026-09-26 ok
donate.nbcf.org.au 3 2026-06-06 2026-08-07 ok
give.nbcf.org.au 23 2026-05-21 2026-09-17 ok
cf.nbcf.org.au 3 2026-06-20 2026-09-03 ok
email.nbcf.org.au 5 2026-05-11 2026-09-08 ok
url.nbcf.org.au 5 2026-05-08 2026-09-06 ok
sms.nbcf.org.au 4 2026-04-17 2026-08-15 ok
donations.nbcf.org.au 4 2026-04-20 2026-08-22 ok
grants.nbcf.org.au 2 2025-06-27 2026-05-28 nxdomain
request.nbcf.org.au 8 2026-06-07 2026-10-05 ok
www.nbcf.org.au 10 2026-05-20 2026-09-15 ok
givingday.nbcf.org.au 3 2026-06-06 2026-08-08 ok
my.nbcf.org.au 12 2026-05-20 2026-09-15 ok

Programmatic access, with DNS A records: API GET /v1/hosts/nbcf.org.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/nbcf.org.au.