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.

38 hosts · 417 ms

HostCertsFirst seenLast seenDNS
kddi-fs.com 2 2025-11-28 2025-11-28 ok
*.kddi-fs.com 16 2025-11-28 2026-09-30 —
redmine01.kddi-fs.com 3 2026-03-03 2026-09-15 ok
qa.kddi-fs.com 3 2025-09-16 2026-10-04 ok
ad.kddi-fs.com 1 2026-01-20 2026-01-20 ok
prod-mt-stage.kddi-fs.com 2 2025-09-24 2026-08-25 ok
dev-mt-stage.kddi-fs.com 2 2025-09-24 2026-08-25 ok
search.kddi-fs.com 3 2025-09-16 2026-10-04 ok
cloud.email.kddi-fs.com 2 2025-08-15 2026-08-03 ok
image.email.kddi-fs.com 4 2025-07-12 2026-09-01 ok
click.email.kddi-fs.com 2 2025-08-15 2026-08-03 ok
view.email.kddi-fs.com 2 2025-08-15 2026-08-02 ok
loan.kddi-fs.com 2 2025-12-12 2025-12-12 ok
stage.loan.kddi-fs.com 1 2025-12-12 2025-12-12 ok
api.stage.loan.kddi-fs.com 1 2025-12-12 2025-12-12 ok
cms.stage.loan.kddi-fs.com 1 2025-12-02 2025-12-02 ok
api.loan.kddi-fs.com 2 2025-12-12 2025-12-12 ok
cms.loan.kddi-fs.com 1 2025-11-28 2025-11-28 ok
login.kddi-fs.com 2 2025-12-18 2025-12-18 ok
*.login.kddi-fs.com 14 2026-05-14 2026-09-30 —
test.login.kddi-fs.com 1 2025-12-11 2025-12-11 ok
api.cardapp.kddi-fs.com 2 2025-12-25 2026-08-20 ok
stage.api.cardapp.kddi-fs.com 2 2025-12-03 2026-08-13 ok
ui.cardapp.kddi-fs.com 1 2025-12-08 2025-12-08 ok
stage.ui.cardapp.kddi-fs.com 1 2025-11-11 2025-11-11 ok
payui.cardapp.kddi-fs.com 1 2026-05-27 2026-05-27 ok
stage.payui.cardapp.kddi-fs.com 1 2026-05-07 2026-05-07 ok
cms.cardapp.kddi-fs.com 2 2025-12-25 2026-08-20 ok
stage.cms.cardapp.kddi-fs.com 2 2025-12-16 2026-08-13 ok
prod-mt-cms.kddi-fs.com 3 2025-09-24 2026-08-25 ok
dev-mt-cms.kddi-fs.com 3 2025-09-24 2026-08-25 ok
contact.kddi-fs.com 2 2026-01-27 2026-01-27 ok
testcontact.kddi-fs.com 1 2025-12-15 2025-12-15 ok
connect.kddi-fs.com 1 2025-12-03 2025-12-03 nodata
test.connect.kddi-fs.com 1 2025-12-03 2025-12-03 nodata
scot.kddi-fs.com 1 2026-01-23 2026-01-23 ok
www.kddi-fs.com 3 2025-09-16 2026-10-04 ok
dev-mt-www.kddi-fs.com 2 2025-09-24 2026-08-25 ok

Programmatic access, with DNS A records: API GET /v1/hosts/kddi-fs.com (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/kddi-fs.com.