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 · 298 ms

HostCertsFirst seenLast seenDNS
foodja.com 1 2025-12-29 2025-12-29 ok
*.foodja.com 1 2025-12-29 2025-12-29 —
cloud.mail.foodja.com 2 2026-04-19 2026-09-21 ok
image.mail.foodja.com 4 2026-01-21 2026-09-09 ok
click.mail.foodja.com 2 2026-04-19 2026-09-21 ok
view.mail.foodja.com 2 2026-04-18 2026-09-19 ok
colo.foodja.com 1 2025-11-23 2025-11-23 ok
insider.foodja.com 9 2026-05-22 2026-07-14 ok
*.insider.foodja.com 4 2026-07-10 2026-07-10 —
staging-site.insider.foodja.com 2 2026-07-10 2026-07-14 ok
staging.insider.foodja.com 2 2026-07-14 2026-07-14 nxdomain
www.insider.foodja.com 2 2026-05-22 2026-05-22 nxdomain
newinsider.foodja.com 2 2026-07-14 2026-07-14 nxdomain
nodepit.foodja.com 4 2026-04-15 2026-08-13 ok

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