IPv4: 198.27.83.222 IPv6: 2607:5300:60:24de::

IPv4: 198.27.81.205 IPv6: 2607:5300:60:22cd::

IPv4: 198.27.81.189 IPv6: 2607:5300:60:22bd::

IPv4: 192.99.36.110 IPv6: 2607:5300:60:4b6e::

Our bots will use IPv4 unless the destination server forces us to use IPv6.
A JSON format IP list could be found at https://www.easycron.com/ips.json.