我筛选的hosts内容：
192.30.253.113 github.com
140.82.118.3 www.github.com
140.82.118.6 api.github.com
151.101.40.133 github.map.fastly.net
151.101.228.133 raw.github.com
151.101.228.133 githubusercontent.com
151.101.65.194 github.global.ssl.fastly.net
185.199.110.153 assets-cdn.github.com
185.199.110.153 documentcloud.github.com
185.199.110.153 help.github.com
203.208.39.99 codeload.github.com
203.208.39.99 gist.github.com
203.208.39.99 status.github.com
203.208.39.99 nodeload.github.com
140.82.114.17 training.github.com
140.82.113.26 live.github.com
通过访问 http://ping.chinaz.com/ 获取不同区域DNS解析到的IP地址：
http://ping.chinaz.com/github.com
http://ping.chinaz.com/github.map.fastly.net
http://ping.chinaz.com/github.global.ssl.fastly.net
http://ping.chinaz.com/assets-cdn.github.com
http://ping.chinaz.com/documentcloud.github.com
http://ping.chinaz.com/help.github.com
http://ping.chinaz.com/gist.github.com
http://ping.chinaz.com/api.github.com
http://ping.chinaz.com/live.github.com
http://ping.chinaz.com/nodeload.github.com
http://ping.chinaz.com/raw.github.com
http://ping.chinaz.com/status.github.com
http://ping.chinaz.com/training.github.com
http://ping.chinaz.com/www.github.com
http://ping.chinaz.com/avatars0.githubusercontent.com
http://ping.chinaz.com/avatars1.githubusercontent.com
http://ping.chinaz.com/codeload.github.com
可以使用浏览器同时打开，节约时间，将获取到的IP地址通过 PingInfoView 进行筛选，选出延迟最小、失败次数最少（成功次数最多)的IP地址，如：
将找出的地址配置到 C:WindowsSystem32driversetchosts 文件中（我这里是Windows环境，linux同理），然后命令行下执行 ipconfig /flushdns。
怎么样，速度还可以吧 _
PingInfoView
下载地址: http://www.nirsoft.net/utils/pinginfoview.zip
汉化文件：http://www.nirsoft.net/utils/trans/pinginfoview_schinese1.zip
这里是我自己找出来的地址，记录一下：
http://ping.chinaz.com/github.com
192.30.253.113
13.229.188.59
13.250.177.223
52.74.223.119
52.78.231.108
192.30.255.112
140.82.118.3
140.82.113.3
140.82.114.4
15.164.81.167
13.114.40.48
140.82.113.4
github.map.fastly.net
151.101.40.133
151.101.228.133
151.101.108.133
151.101.0.133
151.101.76.133
151.101.192.133
151.101.136.133
github.global.ssl.fastly.net
93.46.8.89
199.16.158.190
67.228.37.26
151.101.1.194
31.13.66.6
69.63.190.26
66.220.155.12
199.59.149.244
69.63.184.30
67.228.102.32
46.82.174.68
31.13.82.1
31.13.85.16
67.228.221.221
31.13.84.1
59.24.3.173
69.171.227.37
31.13.97.245
31.13.66.1
31.13.72.17
69.63.178.13
31.13.81.17
66.220.149.32
199.59.150.11
75.126.150.210
69.171.240.27
69.171.229.11
69.63.186.30
31.13.78.65
64.13.232.149
31.13.68.22
74.86.118.24
31.13.76.16
69.63.176.143
69.171.234.18
173.252.102.16
31.13.74.17
69.171.229.28
88.191.249.183
67.228.74.123
75.126.2.43
173.252.110.21
74.86.151.167
69.171.245.49
205.186.152.122
75.126.164.178
69.171.230.18
31.13.86.8
174.36.228.136
31.13.65.18
74.86.3.208
69.171.224.40
31.13.70.20
173.252.102.241
75.126.115.192
174.37.154.236
151.101.65.194
69.171.247.20
69.171.247.32
151.101.21.194
151.101.229.194
assets-cdn.github.com
185.199.109.153
185.199.111.153
185.199.110.153
185.199.108.153
203.208.39.104
documentcloud.github.com
185.199.108.153
185.199.111.153
185.199.109.153
185.199.110.153
66.249.89.104
help.github.com
185.199.108.154
185.199.109.154
185.199.111.154
185.199.110.154
203.208.39.104
gist.github.com
59.24.3.173
8.7.198.45
203.98.7.65
203.208.39.99
13.250.177.223
52.74.223.119
13.229.188.59
192.30.255.119
192.30.253.119
192.30.253.118
192.30.255.118
api.github.com
http://ping.chinaz.com/api.github.com
13.250.168.23
13.250.94.254
54.169.195.247
66.249.89.104
54.180.75.25
140.82.113.6
140.82.114.6
140.82.114.5
192.30.255.117
140.82.118.6
192.30.253.116
13.209.163.61
192.30.253.117
13.230.158.120
140.82.113.5
live.github.com
http://ping.chinaz.com/live.github.com
140.82.114.26
192.30.253.125
192.30.253.124
140.82.113.25
140.82.114.25
203.208.39.104
140.82.113.26
140.82.114.26
192.30.253.125
192.30.253.124
140.82.113.25
140.82.114.25
203.208.39.104
140.82.113.26
nodeload.github.com
54.251.140.56
13.250.162.133
13.229.189.0
13.124.243.66
203.208.39.99
140.82.114.10
140.82.113.9
192.30.253.120
192.30.255.121
140.82.113.10
13.124.75.135
13.112.159.149
192.30.253.121
raw.github.com
151.101.228.133
151.101.108.133
203.208.39.104
151.101.0.133
151.101.196.133
151.101.40.133
151.101.192.133
151.101.208.133
status.github.com
http://ping.chinaz.com/status.github.com
52.205.36.92
54.85.97.34
52.87.114.63
203.208.39.99
training.github.com
http://ping.chinaz.com/training.github.com
140.82.114.17
140.82.113.17
140.82.114.18
192.30.253.166
192.30.253.167
140.82.113.18
66.249.89.104
www.github.com
http://ping.chinaz.com/www.github.com
13.250.177.223
13.229.188.59
52.74.223.119
15.164.81.167
66.249.89.104
140.82.113.4
192.30.253.112
140.82.118.4
52.192.72.89
52.78.231.108
192.30.255.112
140.82.113.3
140.82.114.4
140.82.118.3
avatars0.githubusercontent.com
http://ping.chinaz.com/avatars0.githubusercontent.com
151.101.228.133
151.101.108.133
151.101.40.133
151.101.0.133
151.101.20.133
avatars1.githubusercontent.com
http://ping.chinaz.com/avatars1.githubusercontent.com
151.101.228.133
151.101.0.133
151.101.40.133
151.101.108.133
199.232.36.133
codeload.github.com 203.208.39.99
http://ping.chinaz.com/codeload.github.com
54.251.140.56
13.229.189.0
13.250.162.133
203.208.39.99
13.124.243.66
140.82.114.10
192.30.253.120
192.30.255.120
192.30.253.121
192.30.255.121
140.82.113.10
140.82.113.9
140.82.114.9
13.124.75.135
13.112.159.149