The issues with non-production subdomains improperly routing has been resolved.

Some non-production domains are still resolving/redirecting to production resources. We are actively investigating the issue.

We have identified the root cause of the issue and have deployed an immediate fix. Further investigation and follow-up report will follow.

We have identified an issue certain some non-production domains either will not resolve, or may resolve to the production domains.

Production domains and preview domains are unaffected.