curl --request GET \
  --url https://api.gcore.com/dns/v2/network-mappings \
  --header 'Authorization: <api-key>'

{
  "network_mappings": [
    {
      "id": 123,
      "mapping": [
        {
          "cidr4": [
            "<string>"
          ],
          "cidr6": [
            "<string>"
          ],
          "tags": [
            "<string>"
          ]
        }
      ],
      "name": "<string>"
    }
  ],
  "total_amount": 123
}