Apple Push Notification Service Proxy
Published Mar 13, 2015
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Hi, currently, I can only resolve up to 50-courier.push.apple.com.
$ nslookup 50-courier.push.apple.com
Server: 192.168.213.180
Address: 192.168.213.180#53
Non-authoritative answer:
50-courier.push.apple.com canonical name = 50.courier-push-apple.com.akadns.net.
50.courier-push-apple.com.akadns.net canonical name = apac-au-courier-4.push-apple.com.akadns.net.
Name: apac-au-courier-4.push-apple.com.akadns.net
Address: 17.57.145.37
Name: apac-au-courier-4.push-apple.com.akadns.net
Address: 17.57.145.36
$ nslookup 51-courier.push.apple.com
Server: 192.168.213.180
Address: 192.168.213.180#53
** server can't find 51-courier.push.apple.com: NXDOMAIN