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.

19 hosts · 296 ms

HostCertsFirst seenLast seenDNS
gogroopie.com 17 2026-05-10 2026-09-05 ok
*.gogroopie.com 17 2026-05-10 2026-09-05 —
link.rcmail-beta.gogroopie.com 5 2026-05-20 2026-09-17 ok
delivery.note.gogroopie.com 3 2026-05-02 2026-08-20 ok
elink.emarketing.gogroopie.com 4 2026-04-21 2026-08-19 ok
sli.gogroopie.com 2 2025-09-15 2026-08-16 ok
link.gogroopie.com 5 2026-05-22 2026-09-19 ok
link.rcmail.gogroopie.com 4 2026-06-05 2026-10-03 ok
elink.nl.gogroopie.com 4 2026-04-21 2026-08-19 ok
elink.deals.gogroopie.com 6 2026-02-22 2026-08-19 ok
link.notifications.gogroopie.com 1 2026-09-30 2026-09-30 ok
delivery.notifications.gogroopie.com 5 2026-04-12 2026-09-21 ok
delivery.notications.gogroopie.com 3 2026-05-23 2026-09-08 ok
elink.members.gogroopie.com 4 2026-04-21 2026-08-19 ok
elink.newsletters.gogroopie.com 17 2026-04-15 2026-10-02 ok
delivery.alerts.gogroopie.com 3 2026-05-18 2026-09-01 ok
delivery.support.gogroopie.com 3 2026-05-20 2026-09-03 ok
very.gogroopie.com 3 2026-05-25 2026-09-15 ok
delivery.gogroopie.com 3 2026-05-26 2026-09-10 ok

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