Additional restrictions to ssh key to publish

Deployments
1

Hi,
We are using custom deployment configuration.
In addition to ssh key based authentication we use ip based restrictions to our environment.
But for CircleCI build machines every time ip is different,
Is there any predefined ip range or additional security check we can apply?

Thanks

2

There isn’t a great way to do this aside from whitelisting the two regions builds can run in on AWS: CircleCi Source IP