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.

8 hosts · 258 ms

HostCertsFirst seenLast seenDNS
citizensalliancebank.com 7 2025-08-08 2026-09-04 ok
*.citizensalliancebank.com 2 2025-08-08 2025-09-23 —
lemonade.citizensalliancebank.com 12 2026-05-24 2026-09-19 ok
*.lemonade.citizensalliancebank.com 12 2026-05-24 2026-09-19 —
unifi.citizensalliancebank.com 2 2026-05-01 2026-05-01 ok
loanportal.citizensalliancebank.com 2 2025-10-16 2025-11-10 ok
www.loanportal.citizensalliancebank.com 2 2025-10-16 2025-11-10 nxdomain
www.citizensalliancebank.com 8 2026-04-14 2026-09-15 ok

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