Same issue here. Just started popping up in the last 48 hours and we haven't changed anything. Our code environment is in Google Cloud Run.

Yeah we gave this a shot, however the issue with this solution is that being restricted to a single /28 subset means it causes issues when the app is issuing any kind of significant egress traffic (our app makes frequent calls to external APIs) and o...

We are using App Engine and seeing this

Just chiming in that we are seeing the exact same thing with our Google Cloud app. Lots of unexpected 430 errors starting on 3/5 and continuing through today. This is causing significant issues for our users.