In response to the incident on Wednesday, we are rotating part of our load balancing fleet. This means that some load balancers will be taken out of rotation and replaced with new load balancers. The process is normal, happens at regular intervals, and should not cause any problems.
There is an exception for customers that have hard-coded against our IP addresses in software or firewall configurations. In such case, you may experience intermittent connectivity as a result. Please note that we have dynamic IP addresses in our typical cloud offering. For more details see our documentation (https://smartystreets.com/docs/cloud/requirements#dns
If you require stable or static IPs, please refer to the following:https://smartystreets.com/docs/cloud/forward-proxy-api
For a list of our best practices, please refer to the following:https://smartystreets.com/docs/cloud/best-practices
At the present time, the following is a list of IPs that are either in production or will be added to production. As a reminder, we don't necessarily announce rotation of load balancers or their IP ranges. This is a courtesy update in light of the incident on Wednesday.