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.

9 hosts · 288 ms

HostCertsFirst seenLast seenDNS
drharveys.com 14 2026-04-19 2026-08-19 ok
*.drharveys.com 14 2026-04-19 2026-08-19 —
management-mft6hhs3z6e.drharveys.com 1 2026-09-25 2026-09-25 ok
bimi.drharveys.com 10 2026-06-03 2026-09-29 ok
mt-link.drharveys.com 8 2026-04-10 2026-09-24 ok
shop.drharveys.com 4 2026-05-02 2026-09-03 ok
new.drharveys.com 15 2026-05-15 2026-09-25 ok
www.drharveys.com 15 2026-04-20 2026-10-04 ok
my.drharveys.com 6 2026-05-03 2026-09-01 ok

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