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.

38 hosts · 384 ms

HostCertsFirst seenLast seenDNS
storyboardthat.com 2 2026-02-24 2026-06-17 ok
cdn2.storyboardthat.com 17 2026-05-22 2026-09-18 ok
collab.storyboardthat.com 2 2026-02-22 2026-06-15 ok
upload.storyboardthat.com 16 2026-02-18 2026-08-14 ok
www.preprod.storyboardthat.com 1 2026-02-25 2026-02-25 ok
code.storyboardthat.com 2 2026-02-24 2026-06-18 ok
google.storyboardthat.com 2 2026-02-24 2026-06-18 ok
f.storyboardthat.com 5 2026-04-09 2026-08-19 ok
geof.storyboardthat.com 16 2026-02-06 2026-08-18 ok
svgtopng.storyboardthat.com 2 2026-02-22 2026-06-15 ok
api.storyboardthat.com 2 2026-02-22 2026-06-15 ok
classlink.storyboardthat.com 2 2026-02-24 2026-06-18 ok
school.storyboardthat.com 2 2026-02-24 2026-06-18 ok
cdn.storyboardthat.com 6 2026-04-09 2026-08-19 ok
login.storyboardthat.com 2 2026-02-24 2026-06-18 ok
help.storyboardthat.com 5 2026-05-28 2026-09-27 ok
clever.storyboardthat.com 2 2026-02-24 2026-06-18 ok
signalr.storyboardthat.com 5 2026-07-10 2026-09-08 ok
links.storyboardthat.com 4 2026-04-09 2026-08-19 ok
code.test.storyboardthat.com 3 2026-02-24 2026-06-27 ok
google.test.storyboardthat.com 3 2026-02-24 2026-06-27 ok
api.test.storyboardthat.com 3 2026-02-22 2026-06-27 ok
classlink.test.storyboardthat.com 3 2026-02-24 2026-06-27 ok
school.test.storyboardthat.com 3 2026-02-24 2026-06-27 ok
login.test.storyboardthat.com 3 2026-02-24 2026-06-27 ok
clever.test.storyboardthat.com 3 2026-02-24 2026-06-27 ok
www.test.storyboardthat.com 3 2026-02-23 2026-06-26 ok
hub.dev.storyboardthat.com 3 2026-02-22 2026-06-27 ok
upload.dev.storyboardthat.com 4 2026-02-22 2026-08-17 ok
code.dev.storyboardthat.com 3 2026-02-24 2026-06-27 ok
google.dev.storyboardthat.com 3 2026-02-24 2026-06-27 ok
api.dev.storyboardthat.com 3 2026-02-22 2026-06-27 ok
classlink.dev.storyboardthat.com 3 2026-02-24 2026-06-27 ok
school.dev.storyboardthat.com 3 2026-02-24 2026-06-27 ok
login.dev.storyboardthat.com 3 2026-02-24 2026-06-27 ok
clever.dev.storyboardthat.com 3 2026-02-24 2026-06-27 ok
www.dev.storyboardthat.com 3 2026-02-23 2026-06-26 ok
www.storyboardthat.com 2 2026-02-23 2026-06-16 ok

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