When we use EdgecastCDN with our own origin servers, Edgecast will pull the content from the origins via a specific set of IP addresses.
To have better security, your origin can be restricted to accept incoming traffic only from these address blocks.
Please note that you can refer to the "Customer Origin" section in the Media Control Center for additional information on CDN IP blocks.
October 1st, 2014 change: Addition of 121.189.46.0/23
This makes the full list to be:
108.161.240.0/20
110.232.176.0/22
117.103.183.0/24
117.18.232.0/21
121.189.46.0/23
180.240.184.0/24
192.16.0.0/18
192.229.128.0/17
192.30.0.0/19
194.255.210.64/26
198.7.16.0/20
203.74.4.64/26
213.64.234.0/26
46.22.64.0/20
5.104.64.0/21
68.232.32.0/20
72.21.80.0/20
88.194.45.128/26
93.184.208.0/20
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