add in macOS cloud info

Author: sebastian-lerner

jekyll/_cci2/ip-ranges.md

@@ -132,12 +132,25 @@ While IP ranges is in preview, CircleCI may contact you if the amount of traffic
 ## AWS and GCP IP Addresses
 {: #awsandgcpipaddresses }
 
-The machines that execute *all jobs* (except for MacOS) on CircleCI’s platform, not just jobs opted into IP ranges, are hosted on Amazon Web Services (AWS) and Google Cloud Platform (GCP). An exhaustive list of IP addresses that CircleCI’s traffic may come from on these cloud providers’ platforms can be found by looking up each cloud providers’ IP address ranges. Each cloud provider offers endpoints to find this information.
+The machines that execute *all jobs* on CircleCI’s platform, not just jobs opted into IP ranges, are hosted on Amazon Web Services (AWS), Google Cloud Platform (GCP), and CircleCI's macOS Cloud. An exhaustive list of IP addresses that CircleCI’s traffic may come from on these cloud providers’ platforms can be found by looking up each cloud providers’ IP address ranges. AWS & GCP offer endpoints to find this information.
 
 - [AWS](https://ip-ranges.amazonaws.com/ip-ranges.json): CircleCI uses the *us-east-1* and *us-east-2* regions
 - [GCP](https://www.gstatic.com/ipranges/cloud.json): CircleCI uses the *us-east1* and *us-central1* regions
-
-CircleCI *does not recommend* configuring an IP-based firewall based on the above IP addresses, as the vast majority are not CircleCI’s machines. Additionally, there is *no guarantee* that the addresses in the endpoints above persist from day-to-day, as these addresses are reassigned continuously.
+- CircleCI macOS Cloud:
+ - 162.252.208.0/24
+ - 162.252.209.0/24
+ - 192.206.63.0/24
+ - 162.221.90.0/24
+ - 38.39.177.0/24
+ - 38.39.178.0/24
+ - 38.39.188.0/24
+ - 38.39.189.0/24 
+ - 38.39.186.0/24
+ - 38.39.187.0/24
+ - 38.39.184.0/24 
+ - 138.39.185.0/24
+
+CircleCI *does not recommend* configuring an IP-based firewall based on the AWS or GCP IP addresses, as the vast majority are not CircleCI’s machines. Additionally, there is *no guarantee* that the addresses in the AWS or GCP endpoints persist from day-to-day, as these addresses are reassigned continuously.
  
 **IP ranges** is the recommended method for configuring an IP-based firewall to allow traffic from CircleCI’s platform.