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.

54 hosts · 455 ms

HostCertsFirst seenLast seenDNS
northbeam.io 10 2026-04-15 2026-08-12 ok
*.northbeam.io 1 2026-09-24 2026-09-24 —
i2.northbeam.io 5 2026-04-09 2026-09-19 ok
elink878.northbeam.io 11 2026-04-15 2026-08-12 ok
nb-adhoc-public.northbeam.io 12 2026-06-03 2026-09-29 ok
static.northbeam.io 12 2026-06-03 2026-09-29 ok
dashboard-api-async.northbeam.io 3 2026-05-10 2026-08-25 ok
dashboard-api-canary-async.northbeam.io 3 2026-05-12 2026-08-25 ok
dashboard.northbeam.io 4 2026-04-08 2026-08-11 ok
dashboard.staging.northbeam.io 5 2026-04-29 2026-08-27 ok
auth.northbeam.io 10 2026-04-30 2026-08-27 ok
i.northbeam.io 3 2026-06-01 2026-09-15 ok
api.northbeam.io 3 2026-05-02 2026-08-18 ok
dashboard-api.northbeam.io 3 2026-05-02 2026-08-23 ok
dev-api.northbeam.io 9 2026-04-13 2026-09-28 ok
*.api.northbeam.io 1 2026-09-24 2026-09-24 —
dashboard.api.northbeam.io 2 2026-09-01 2026-09-11 ok
performance-alerts.api.northbeam.io 3 2026-08-24 2026-09-11 ok
chat.api.northbeam.io 10 2026-05-26 2026-09-11 ok
j.northbeam.io 3 2026-05-13 2026-08-25 ok
upflow-email.northbeam.io 4 2026-04-21 2026-08-19 ok
info.northbeam.io 11 2026-04-19 2026-08-16 ok
mcp.northbeam.io 8 2026-06-05 2026-09-11 ok
help.northbeam.io 2 2026-09-21 2026-09-21 ok
shop.northbeam.io 10 2026-05-13 2026-09-09 ok
dashboard-api-job-manager.northbeam.io 4 2026-04-16 2026-09-29 ok
dashboard-api-canary-job-manager.northbeam.io 5 2026-04-10 2026-09-17 ok
newsletter.northbeam.io 5 2026-06-09 2026-09-22 ok
www.newsletter.northbeam.io 8 2026-04-14 2026-04-15 nxdomain
themediabuyer.northbeam.io 6 2026-06-09 2026-08-08 ok
docs.northbeam.io 11 2026-06-03 2026-09-22 ok
mmm-docs.northbeam.io 9 2026-05-24 2026-09-20 ok
files.northbeam.io 3 2026-05-29 2026-09-15 ok
user-files.northbeam.io 10 2026-06-05 2026-10-01 ok
meetings.northbeam.io 4 2026-04-08 2026-08-13 ok
partners.northbeam.io 6 2026-06-01 2026-09-29 ok
assets.northbeam.io 1 2026-09-11 2026-09-11 ok
status.northbeam.io 1 2026-09-22 2026-09-22 ok
api-uat.northbeam.io 5 2026-04-13 2026-09-24 ok
intranet.northbeam.io 4 2026-06-05 2026-10-03 ok
www.touchpoint.northbeam.io 12 2026-04-26 2026-08-22 ok
osc-test.robot.northbeam.io 4 2026-06-02 2026-07-25 ok
helptest.northbeam.io 2 2026-09-03 2026-09-03 ok
user-files-dev.northbeam.io 9 2026-06-04 2026-10-01 ok
dashboard.dev.northbeam.io 6 2026-05-20 2026-09-17 ok
api.dev.northbeam.io 5 2026-04-15 2026-09-24 ok
jdev.northbeam.io 11 2026-06-04 2026-10-01 ok
www.northbeam.io 10 2026-05-05 2026-08-31 ok
academy.northbeam.io 5 2026-05-02 2026-08-30 ok
dashboard-api-canary.northbeam.io 3 2026-04-29 2026-08-14 ok
dashboard.canary.northbeam.io 5 2026-05-13 2026-09-11 ok
dashboard-api-heavy.northbeam.io 4 2026-05-19 2026-09-07 ok
dashboard-api-canary-heavy.northbeam.io 3 2026-05-05 2026-08-17 ok
dashboard.proxy.northbeam.io 5 2026-05-01 2026-09-19 ok

Programmatic access, with DNS A records: API GET /v1/hosts/northbeam.io (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/northbeam.io.