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.

9 hosts · 227 ms

HostCertsFirst seenLast seen
uniqlo.co.kr 4 2025-07-07 2026-06-05
*.uniqlo.co.kr 11 2025-07-02 2026-10-05
uqsales-intra.uniqlo.co.kr 3 2026-03-16 2026-08-16
prd-uqkr-payment-processor.uniqlo.co.kr 3 2026-03-16 2026-08-16
ext-prd-uqkr-payment-processor.uniqlo.co.kr 3 2026-04-14 2026-09-14
stg-uqkr-payment-processor.uniqlo.co.kr 2 2025-10-27 2026-09-27
ext-stg-uqkr-payment-processor.uniqlo.co.kr 3 2026-03-19 2026-08-19
mta-sts.uniqlo.co.kr 1 2026-01-22 2026-01-22
uqsales-intra-dev.uniqlo.co.kr 2 2025-10-27 2026-09-27

Programmatic access: API GET /v1/hosts/uniqlo.co.kr (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/uniqlo.co.kr.