If you have restrictions on your origin, there are three ways to whitelist the CDN servers:
  • via HTTP headers (recommended)
  • via CDN servers’ IP addresses
  • via CDN servers’ subnets
Info We continually expand our network, so the list of servers changes constantly. If you fail to add the IP address of a new server or a subnet to the whitelist, users cannot access content from that edge server. We recommend writing a script that automatically updates your ACL. New IP addresses or subnets are added to our list 30-60 minutes before launching a new server.

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Whitelist via HTTP headers

Use the Add Request Headers option to set up a custom header. We recommend this method as it does not require further updates once set up. In contrast, the list of IP addresses must be regularly updated.

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Whitelist via IP addresses

You can fetch the IP addresses of the CDN servers by using this API request: 
curl -i -X GET https://api.gcore.com/cdn/public-ip-list

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Whitelist via subnets

You can fetch the IP addresses of the CDN subnets using this API request: 
curl -i -X GET https://api.gcore.com/cdn/public-net-list