These 35 or so odd proxies worked when I last checked them.

Code:

109.104.129.222:8080
50.22.206.188:8080
50.19.217.60:80
204.154.142.159:80
92.53.39.129:3128
184.154.55.239:80
74.11.95.200:3128
117.58.241.227:8080
120.50.0.62:8080
97.81.243.127:8080
109.104.132.153:8080
175.41.130.237:3128
41.79.236.32:8080
88.85.125.78:8080
50.22.88.81:3128
114.130.13.222:8080
202.53.164.30:8080
77.242.27.63:80
67.51.111.115:80
46.137.119.143:80
202.59.141.21:80
180.211.180.194:8080
188.113.128.122:8888
93.95.64.2:3128
95.128.184.155:8080
184.154.55.239:8080
50.22.88.80:3128
184.73.114.107:3128
196.216.56.18:3128
89.121.242.246:3128
69.5.148.34:8080
95.128.184.153:8080
186.153.133.234:3128
174.122.126.186:3128
184.82.107.104:3128

All are dead

Check your program, I just used 20/30 of those with a response time of 4 seconds or less.

Code:

117.58.241.227:8080 | 6.0965203
109.104.132.153:8080 | 5.9915143
202.59.141.21:80 | Dead
50.22.88.80:3128 | 1.5852622
46.137.119.143:80 | 4.6644383
202.53.164.30:8080 | Dead
184.154.55.239:8080 | 7.681611
184.73.114.107:3128 | 1.5492602
114.130.13.222:8080 | 11.4798282
184.73.114.107:3128 | 4.8194472
50.22.88.81:3128 | 1.4042519
184.73.114.107:3128 | 1.4572549
175.41.130.237:3128 | 1.4192528
117.58.241.227:8080 | 4.621436
184.73.114.107:3128 | 1.4202528

Those are just a few, I couldnt be bothered checking more.