Google App Engine - list of IP addresses?

 

From the GAE documentationn, you need to use the dig command because it does not currently provide a way to map static IP addresses to an application, due to its design:

dig -t TXT _netblocks.google.com @ns1.google.com

If the dig command is not available on your system, you can use an online service:

As the time of writing this answer, querying http://www.digwebinterface.com/?hostnames=_netblocks.google.com&type=TXT&useresolver=8.8.4.4&ns=self&nameservers=ns1.google.com returns:

_netblocks.google.com.  3596    IN  TXT "v=spf1 ip4:216.239.32.0/19 ip4:64.233.160.0/19 ip4:66.249.80.0/20 ip4:72.14.192.0/18 ip4:209.85.128.0/17 ip4:66.102.0.0/20 ip4:74.125.0.0/16 ip4:64.18.0.0/20 ip4:207.126.144.0/20 ip4:173.194.0.0/16 ?all"

Here the formatted list for the Google API console if you need it:

216.239.32.0/19 
64.233.160.0/19 
66.249.80.0/20 
72.14.192.0/18 
209.85.128.0/17 
66.102.0.0/20 
74.125.0.0/16 
64.18.0.0/20 
207.126.144.0/20 
173.194.0.0/16

Please note the IP ranges may change in the future so you will need to run this query from time to time.