Below is a list of most IP addresses we currently use. Sometimes you need to whitelist these IP addresses to avoid that your host blocks our firewall.
Note that we may add and remove IP addresses at any time without notice.

18.221.197.243
52.15.237.250
3.19.3.34
3.18.238.17
13.58.49.77
18.222.191.77

3.131.108.250 (as of September 2020)

CIDR Notation
18.221.197.243/32
52.15.237.250/32
18.220.89.14/32
3.18.238.17/32
13.58.49.77/32
18.222.191.77/32

3.131.108.250/32

IPTables Rules
iptables -A INPUT -s 18.221.197.243 -j ACCEPT
iptables -A OUTPUT -d 18.221.197.243 -j ACCEPT
iptables -A INPUT -s 52.15.237.250 -j ACCEPT
iptables -A OUTPUT -d 52.15.237.250 -j ACCEPT
iptables -A INPUT -s 3.19.3.34 -j ACCEPT
iptables -A OUTPUT -d 3.19.3.34 -j ACCEPT
iptables -A INPUT -s 3.18.238.17 -j ACCEPT
iptables -A OUTPUT -d 3.18.238.17 -j ACCEPT
iptables -A INPUT -s 13.58.49.77 -j ACCEPT
iptables -A OUTPUT -d 13.58.49.77 -j ACCEPT
iptables -A INPUT -s 18.222.191.77 -j ACCEPT
iptables -A OUTPUT -d 18.222.191.77 -j ACCEPT

iptables -A INPUT -s 3.131.108.250 -j ACCEPT
iptables -A OUTPUT -d 3.131.108.250 -j ACCEPT

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