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.

35 hosts · 220 ms

HostCertsFirst seenLast seen
nn.be 5 2025-11-05 2026-09-06
*.nn.be 5 2025-11-05 2026-09-06
binda.nn.be 1 2026-04-10 2026-04-10
login-acc.nn.be 4 2026-05-06 2026-09-15
clientservicing.poc.nn.be 8 2025-10-21 2026-08-23
acc.clientservicing.poc.nn.be 8 2025-10-21 2026-08-23
myworkplace.nn.be 1 2026-05-13 2026-05-13
email.insurance.nn.be 5 2026-05-17 2026-09-14
secure.nn.be 7 2025-06-30 2026-09-06
*.secure.nn.be 7 2025-06-30 2026-09-06
atp-staging.nn.be 2 2026-02-13 2026-06-24
auth.nn.be 1 2026-05-13 2026-05-13
verdi.nn.be 1 2026-02-16 2026-02-16
myinsurance.api.nn.be 8 2025-10-21 2026-08-23
nonlife.api.nn.be 2 2025-12-17 2025-12-17
acc-nonlife.api.nn.be 2 2025-12-17 2025-12-17
tst-nonlife.api.nn.be 2 2025-12-17 2025-12-17
documentation.nonlife.api.nn.be 8 2025-10-21 2026-08-23
feedback.nn.be 3 2025-08-19 2026-08-27
www.brokerportal.nn.be 2 2026-04-27 2026-05-04
esign.nn.be 1 2025-12-02 2025-12-02
acceptance-esign.nn.be 1 2025-12-02 2025-12-02
login.nn.be 3 2026-05-15 2026-09-28
atp.nn.be 2 2026-02-14 2026-06-24
vdi-broker.nn.be 1 2026-02-16 2026-02-16
loans.nn.be 2 2026-04-10 2026-04-10
sts.nn.be 2 2025-07-25 2026-07-27
cinsweb-uat.nn.be 2 2025-09-19 2025-10-20
myworkplace-uat.nn.be 1 2026-05-05 2026-05-05
auth-uat.nn.be 1 2026-04-07 2026-04-07
loans-uat.nn.be 1 2026-04-24 2026-04-24
cinsweb-tst.nn.be 1 2026-04-02 2026-04-02
aml-tst.nn.be 1 2025-12-19 2025-12-19
cinsweb-dev.nn.be 1 2026-03-20 2026-03-20
cinsapex-dev.nn.be 2 2025-12-19 2025-12-19

Programmatic access: API GET /v1/hosts/nn.be (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/nn.be.