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.

46 hosts · 374 ms

HostCertsFirst seenLast seenDNS
aat.org.uk 3 2025-10-17 2026-10-02 ok
*.aat.org.uk 4 2025-09-23 2026-08-24 —
brandhub.aat.org.uk 2 2025-07-20 2026-06-20 ok
springpod.aat.org.uk 14 2026-05-02 2026-08-28 ok
www.springpod.aat.org.uk 10 2026-05-02 2026-08-28 ok
store.aat.org.uk 5 2026-04-22 2026-08-20 ok
xrm-prod.api.azure.aat.org.uk 1 2026-10-06 2026-10-06 ok
xrm-uat.api.azure.aat.org.uk 2 2026-08-13 2026-08-13 ok
xrm-dev.api.azure.aat.org.uk 4 2026-08-13 2026-08-13 ok
info.aat.org.uk 10 2026-06-05 2026-08-20 ok
mta-sts.info.aat.org.uk 4 2026-04-17 2026-09-11 ok
shop.aat.org.uk 1 2026-06-04 2026-06-04 ok
employer.aat.org.uk 5 2026-04-16 2026-09-30 ok
jobs.aat.org.uk 3 2025-10-07 2026-09-07 ok
admin.jobs.aat.org.uk 3 2025-10-07 2026-09-07 ok
apprenticejobs.aat.org.uk 3 2025-10-07 2026-09-07 ok
magazines.aat.org.uk 3 2026-05-16 2026-08-31 ok
credentials.aat.org.uk 10 2026-04-23 2026-08-19 ok
uatcredentials.aat.org.uk 14 2026-06-04 2026-10-01 ok
emails.aat.org.uk 2 2025-08-26 2026-08-25 ok
mta-sts.emails.aat.org.uk 5 2026-05-09 2026-09-09 ok
www.emails.aat.org.uk 2 2025-08-26 2026-08-25 ok
forums.aat.org.uk 12 2026-05-08 2026-09-03 ok
aatlistens.aat.org.uk 5 2026-05-08 2026-09-25 ok
recruiters.aat.org.uk 3 2025-10-07 2026-09-07 ok
stss.aat.org.uk 4 2026-06-04 2026-10-02 ok
load.stss.aat.org.uk 13 2026-06-04 2026-09-30 ok
wss.aat.org.uk 1 2026-09-05 2026-09-05 ok
mta-sts.aat.org.uk 4 2026-04-13 2026-08-12 ok
prospectus.aat.org.uk 5 2026-04-11 2026-09-23 ok
*.aws.aat.org.uk 4 2025-10-20 2026-09-20 —
*.staging.v2.aws.aat.org.uk 4 2025-08-08 2026-07-09 —
*.production.v2.aws.aat.org.uk 6 2025-09-11 2026-08-12 —
*.uat.v2.aws.aat.org.uk 2 2026-06-18 2026-06-18 —
*.xat.v2.aws.aat.org.uk 4 2025-10-01 2026-09-01 —
*.development.v2.aws.aat.org.uk 2 2025-12-22 2025-12-22 —
lms.aws.aat.org.uk 2 2025-09-16 2026-08-16 ok
stage-lms.aws.aat.org.uk 1 2026-01-18 2026-01-18 ok
uat-lms.aws.aat.org.uk 1 2026-06-25 2026-06-25 ok
mta-sts.aws.aat.org.uk 4 2026-04-19 2026-08-19 ok
shop-uat.aws.aat.org.uk 8 2026-06-05 2026-10-04 ok
lms-content.aws.aat.org.uk 2 2025-09-16 2026-08-16 ok
contact.aat.org.uk 1 2025-10-01 2025-10-01 ok
mta-sts.contact.aat.org.uk 5 2026-05-11 2026-09-10 ok
www.contact.aat.org.uk 1 2025-10-01 2025-10-01 ok
onlinesupport.aat.org.uk 4 2026-04-12 2026-04-27 ok

Programmatic access, with DNS A records: API GET /v1/hosts/aat.org.uk (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/aat.org.uk.