全球IP查询
分别查询github.com和github.global.ssl.fastly.net对应的ip地址
备注：
获取github.com网站IP地址：
终端命令
Ping github.com
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 localhost
255.255.255.255 broadcasthost
::1 localhost
199.232.68.133 raw.githubusercontent.com
140.82.112.4 github.com