You can choose to connect to only UDP enabled IPs by adding "-udp-true" or ";udp=true" after your username.

Examples

Unmetered Residential:

Please note: Unmetered Residential proxies are no longer available for purchase. Existing subscriptions will continue to work, however.
​curl -x unmetered.residential.proxyrack.net:10000 -U 'username-upd-true:passsword' http://example.com
​curl -x unmetered.residential.proxyrack.net:10000 -U 'username;udp=true:passsword' http://example.com

Premium Residential:
​curl -x premium.residential.proxyrack.net:10000 -U 'username-upd-true:passsword' http://example.com
​curl -x premium.residential.proxyrack.net:10000 -U 'username;udp=true:passsword' http://example.com

Private Unmetered Residential:
​curl -x private.residential.proxyrack.net:10000 -U 'username-upd-true:passsword' http://example.com
​curl -x private.residential.proxyrack.net:10000 -U 'username;udp=true:passsword' http://example.com

USA Rotating Datacenter:
​curl -x usa.rotating.proxyrack.net:10000 -U 'username-upd-true:passsword' http://example.com
​curl -x usa.rotating.proxyrack.net:10000 -U 'username;udp=true=10:passsword' http://example.com

Global Rotating Datacenter:
​curl -x global.rotating.proxyrack.net:10000 -U 'username-upd-true:passsword' http://example.com
​curl -x global.rotating.proxyrack.net:10000 -U 'username;udp=true:passsword' http://example.com

Static USA Datacenter:
​curl -x usa.static.proxyrack.net:10000 -U 'username-upd-true:passsword' http://example.com
​curl -x usa.static.proxyrack.net:10000 -U 'username;udp=true:passsword' http://example.com