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.

42 hosts · 275 ms

HostCertsFirst seenLast seenDNS
suzuri.jp 6 2025-10-06 2026-09-06 ok
*.suzuri.jp 6 2025-10-06 2026-09-06 —
sandbox-bird.suzuri.jp 2 2026-03-12 2026-08-12 ok
*.sandbox-bird.suzuri.jp 2 2026-03-12 2026-08-12 —
staging.suzuri.jp 1 2025-12-05 2025-12-05 nxdomain
*.staging.suzuri.jp 1 2025-12-05 2025-12-05 —
hanshi.suzuri.jp 5 2026-05-22 2026-09-20 ok
integration.suzuri.jp 3 2025-12-05 2025-12-05 ok
*.integration.suzuri.jp 2 2025-12-05 2025-12-05 —
collection.suzuri.jp 5 2026-06-14 2026-09-14 nxdomain
sandbox-katon.suzuri.jp 3 2026-03-13 2026-08-13 ok
*.sandbox-katon.suzuri.jp 2 2026-03-13 2026-08-13 —
sandbox-raiton.suzuri.jp 2 2026-03-13 2026-08-13 ok
*.sandbox-raiton.suzuri.jp 2 2026-03-13 2026-08-13 —
sandbox-suiton.suzuri.jp 2 2026-03-13 2026-08-13 ok
*.sandbox-suiton.suzuri.jp 2 2026-03-13 2026-08-13 —
sandbox-doton.suzuri.jp 2 2026-03-13 2026-08-13 ok
*.sandbox-doton.suzuri.jp 2 2026-03-13 2026-08-13 —
sandbox-futon.suzuri.jp 2 2026-03-13 2026-08-13 ok
*.sandbox-futon.suzuri.jp 2 2026-03-13 2026-08-13 —
sandbox-mokuton.suzuri.jp 1 2026-06-05 2026-06-05 ok
*.sandbox-mokuton.suzuri.jp 1 2026-06-05 2026-06-05 —
sandbox-hyouton.suzuri.jp 1 2026-06-05 2026-06-05 ok
*.sandbox-hyouton.suzuri.jp 1 2026-06-05 2026-06-05 —
go.suzuri.jp 4 2026-05-19 2026-07-27 ok
mcp.suzuri.jp 8 2026-04-20 2026-08-18 ok
lp.suzuri.jp 1 2025-07-31 2025-07-31 ok
help.suzuri.jp 8 2026-05-08 2026-08-20 ok
motionlp.suzuri.jp 6 2026-06-13 2026-09-13 nxdomain
*.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox-bird.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.integration.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox-katon.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox-raiton.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox-suiton.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox-doton.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox-futon.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox-mokuton.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox-hyouton.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
*.sandbox.shop.suzuri.jp 2 2026-10-01 2026-10-01 —
sandbox.suzuri.jp 1 2025-12-05 2025-12-05 ok
*.sandbox.suzuri.jp 1 2025-12-05 2025-12-05 —

Programmatic access, with DNS A records: API GET /v1/hosts/suzuri.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/suzuri.jp.