Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

17 hosts · 198 ms

HostCertsFirst seenLast seen
autobahn.email 1 2026-05-25 2026-05-25
*.autobahn.email 7 2025-06-29 2026-09-29
dashboard.mta-dev-v1.autobahn.email 1 2026-09-14 2026-09-14
api.mta-dev-v1.autobahn.email 1 2026-09-14 2026-09-14
*.infra.autobahn.email 1 2026-06-24 2026-06-24
prod.infra.autobahn.email 2 2026-06-24 2026-06-24
3k3j9q2jsfp3vumze6n801qzegu625z.prod.infra.autobahn.email 1 2026-06-24 2026-06-24
*.webhookv2-prod.autobahn.email 3 2025-10-22 2026-09-22
openobserve.autobahn.email 5 2026-05-07 2026-09-15
private-cloud.pages.autobahn.email 5 2026-05-28 2026-09-26
webhook-api.pages.autobahn.email 5 2026-05-29 2026-09-26
v2docs.pages.autobahn.email 5 2026-05-28 2026-09-26
status.autobahn.email 16 2026-03-02 2026-10-08
support.autobahn.email 5 2026-05-27 2026-09-24
*.webhookv2-dev.autobahn.email 4 2025-09-11 2026-08-20
www.autobahn.email 3 2025-06-16 2026-05-25
zabbix.autobahn.email 5 2026-05-07 2026-09-13

Programmatic access: API GET /v1/hosts/autobahn.email (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/autobahn.email.