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.

14 hosts · 272 ms

HostCertsFirst seenLast seenDNS
liforme.com 17 2026-05-19 2026-09-29 ok
ca.liforme.com 14 2026-05-19 2026-09-28 ok
www.ca.liforme.com 11 2026-05-17 2026-09-27 ok
ssc.liforme.com 2 2026-08-27 2026-08-27 ok
i.liforme.com 6 2026-04-19 2026-09-05 ok
cn.liforme.com 14 2026-05-18 2026-09-27 ok
help.liforme.com 12 2026-04-10 2026-08-06 ok
sms.liforme.com 10 2026-05-10 2026-09-06 ok
us.liforme.com 20 2026-05-17 2026-09-26 ok
www.us.liforme.com 16 2026-05-19 2026-09-27 ok
account.liforme.com 19 2026-04-07 2026-10-01 ok
eu.liforme.com 15 2026-05-17 2026-09-27 ok
www.eu.liforme.com 13 2026-05-17 2026-09-28 ok
www.liforme.com 14 2026-05-18 2026-09-28 ok

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