title: IP range of google GCM push notification server?
body: <p>Wonder if anyone here happen to know the ip range of google's gcm server (for android push notification)?</p>
  
  <p>I need the information so that our network team can open the firewall port for our UAT environment for incoming UAT test.</p>
  
  <p>I tried to lookup from developer.android.com/google/gcm/‎ but no luck.</p>
  
  <p>Our network team refused to open all ip range from asn 15169 which is a rather huge list.</p>