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.

20 hosts · 247 ms

HostCertsFirst seenLast seenDNS
*.unext-info.jp 2 2025-07-10 2026-06-10 —
dc-kp01.unext-info.jp 5 2026-05-10 2026-09-13 ok
dc-gt01.unext-info.jp 5 2026-05-10 2026-09-13 ok
ov01.unext-info.jp 6 2026-04-16 2026-09-15 ok
dc-ot02.unext-info.jp 5 2026-05-03 2026-09-06 ok
jira.unext-info.jp 3 2026-06-07 2026-08-09 ok
cloud.jira.unext-info.jp 1 2025-11-13 2025-11-13 ok
*.pub.unext-info.jp 2 2025-11-20 2025-11-20 —
*.pepura.pub.unext-info.jp 2 2026-04-27 2026-09-27 —
*.pepura.gpub.unext-info.jp 6 2026-04-28 2026-10-02 —
uvgt-rd.unext-info.jp 5 2026-05-27 2026-09-22 ok
uvgt-g.unext-info.jp 5 2026-05-27 2026-09-22 ok
cloud.wiki.unext-info.jp 1 2025-11-13 2025-11-13 ok
codeshop-help.unext-info.jp 5 2026-04-24 2026-08-26 ok
codeshop.unext-info.jp 13 2026-04-17 2026-09-30 ok
uvgt-ops.unext-info.jp 5 2026-05-27 2026-09-22 ok
uvgt-g-t.unext-info.jp 5 2026-05-27 2026-09-22 ok
uvgt.unext-info.jp 5 2026-05-27 2026-09-22 ok
codeshop-checkout.unext-info.jp 16 2026-04-14 2026-09-28 ok
coredev.unext-info.jp 6 2026-06-02 2026-10-01 ok

Programmatic access, with DNS A records: API GET /v1/hosts/unext-info.jp (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/unext-info.jp.