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.

15 hosts · 321 ms

HostCertsFirst seenLast seenDNS
kissusa.com 30 2025-06-24 2026-09-27 ok
*.kissusa.com 22 2025-06-24 2026-09-22 —
b2b.kissusa.com 2 2025-12-24 2025-12-24 ok
vc.kissusa.com 1 2026-01-28 2026-01-28 nxdomain
eoffice.kissusa.com 2 2025-12-24 2025-12-24 nxdomain
instructions-lash.kissusa.com 6 2026-04-18 2026-08-14 ok
i.kissusa.com 4 2026-04-19 2026-08-23 ok
api.kissusa.com 2 2025-12-24 2025-12-24 ok
csportal.kissusa.com 2 2026-03-30 2026-08-30 ok
koreanfestival.kissusa.com 2 2026-09-16 2026-09-16 ok
instructions-nail.kissusa.com 2 2026-08-31 2026-08-31 ok
sap-mcp.kissusa.com 2 2026-04-17 2026-09-17 nxdomain
kisscms.kissusa.com 5 2026-05-20 2026-09-17 ok
account.kissusa.com 9 2026-04-22 2026-09-01 ok
www.kissusa.com 13 2026-04-16 2026-09-27 ok

Programmatic access, with DNS A records: API GET /v1/hosts/kissusa.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/kissusa.com.