The safelist is a list of IP addresses that Digital River uses to send webhook notifications. To receive webhook notifications from Digital River, you'll need to open your firewall to these IP addresses.
209.87.176.0/21
209.87.188.0/22
67.216.235.0/24
67.216.236.0/23
67.216.238.0/24
208.79.248.0/21
208.82.172.0/22
66.192.69.0/24
8.18.233.0/24
147.75.144/20
54.204.214.106/32
100.25.55.35/32
3.94.74.169/32
52.207.145.30/32
35.167.151.150/32
50.112.167.211/32
52.36.133.196/32
54.68.3.105/32
85.255.23.0/20
217.65.128.0/20
81.21.144.0/20
195.95.191.0/24
52.19.155.167/32
34.241.30.95/32
210.242.154.0/29
Note that the slash at the end is CIDR notation and represents a range of IP addresses.