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.

60 hosts · 218 ms

HostCertsFirst seenLast seen
aon.co.za 17 2026-01-23 2026-10-03
*.aon.co.za 16 2026-04-26 2026-10-03
cesa2.aon.co.za 6 2026-03-10 2026-08-26
easterncape2.aon.co.za 6 2026-03-10 2026-08-26
sa.aon.co.za 6 2026-05-18 2026-10-03
eb.aon.co.za 6 2026-03-10 2026-08-26
investec.aon.co.za 19 2026-04-14 2026-10-08
*.investec.aon.co.za 18 2026-04-14 2026-10-08
www.investec.aon.co.za 1 2026-06-08 2026-06-08
newinvestec.aon.co.za 20 2025-09-01 2026-09-26
*.newinvestec.aon.co.za 18 2026-04-15 2026-09-26
www.newinvestec.aon.co.za 2 2025-09-01 2026-09-01
cloud.affinityinsurance.aon.co.za 2 2025-07-18 2026-07-05
image.affinityinsurance.aon.co.za 3 2025-09-24 2026-06-18
click.affinityinsurance.aon.co.za 2 2025-07-18 2026-07-05
pages.affinityinsurance.aon.co.za 2 2025-07-18 2026-07-06
view.affinityinsurance.aon.co.za 2 2025-07-18 2026-07-05
easterncape.aon.co.za 1 2025-12-11 2025-12-11
sre.aon.co.za 6 2026-03-10 2026-08-26
investecprivatebroking.aon.co.za 6 2026-03-10 2026-08-26
medical.aon.co.za 6 2026-03-10 2026-08-26
dauinternalreferral.aon.co.za 5 2026-06-12 2026-08-26
portal.aon.co.za 2 2025-12-03 2025-12-03
uat-portal.aon.co.za 13 2026-02-23 2026-09-18
*.uat-portal.aon.co.za 12 2026-05-02 2026-09-18
www.uat-portal.aon.co.za 1 2026-02-23 2026-02-23
www.portal.aon.co.za 2 2025-12-03 2025-12-03
claimsportal.aon.co.za 2 2025-07-24 2026-07-07
uat-wsportal.aon.co.za 10 2026-03-23 2026-09-17
*.uat-wsportal.aon.co.za 8 2026-07-16 2026-09-17
www.uat-wsportal.aon.co.za 2 2026-03-23 2026-09-08
claimswsportal.aon.co.za 2 2025-07-24 2026-07-07
medicoop.aon.co.za 6 2026-03-10 2026-08-26
uat.aon.co.za 16 2025-10-24 2026-08-27
*.uat.aon.co.za 13 2026-05-01 2026-08-27
cesa.uat.aon.co.za 3 2025-10-24 2026-06-12
eb.uat.aon.co.za 3 2025-10-24 2026-06-12
easterncape.uat.aon.co.za 3 2025-10-24 2026-06-12
sre.uat.aon.co.za 3 2025-10-24 2026-06-12
golf.uat.aon.co.za 3 2025-10-24 2026-06-12
investecprivatebroking.uat.aon.co.za 3 2025-10-24 2026-06-12
medical.uat.aon.co.za 3 2025-10-24 2026-06-12
dauinternalreferral.uat.aon.co.za 2 2026-05-25 2026-06-12
medicoop.uat.aon.co.za 3 2025-10-24 2026-06-12
egs.uat.aon.co.za 3 2025-10-24 2026-06-12
fleet.uat.aon.co.za 3 2025-10-24 2026-06-12
www.uat.aon.co.za 3 2025-10-24 2026-06-12
daugrandprix.uat.aon.co.za 9 2026-06-11 2026-06-13
*.daugrandprix.uat.aon.co.za 8 2026-06-11 2026-06-13
investecuat.aon.co.za 13 2025-07-24 2026-09-20
*.investecuat.aon.co.za 10 2026-07-16 2026-09-20
www.investecuat.aon.co.za 3 2025-07-24 2026-07-07
newinvestecuat.aon.co.za 12 2026-03-06 2026-09-17
*.newinvestecuat.aon.co.za 11 2026-07-16 2026-09-17
www.newinvestecuat.aon.co.za 1 2026-03-06 2026-03-06
motorfleet.aon.co.za 6 2026-03-10 2026-08-26
www.test.aon.co.za 2 2025-09-25 2026-09-28
dau.aon.co.za 12 2026-07-07 2026-09-08
*.dau.aon.co.za 9 2026-07-08 2026-09-08
www.aon.co.za 1 2026-01-23 2026-01-23

Programmatic access: API GET /v1/hosts/aon.co.za (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/aon.co.za.