#国内某网站的接口，只返回IP
curl ip.6655.com/ip.aspx
curl whatismyip.akamai.com
#更多用法访问ifconfig.co
wget -qO - ifconfig.co
 
curl icanhazip.com
dig +short myip.opendns.com @resolver1.opendns.com
 
curl ident.me
curl v4.ident.me
curl v6.ident.me
#慢
curl curlmyip.com 
curl ifconfig.me
curl inet-ip.info
 
 
#返回IP和地区
curl ip.6655.com/ip.aspx?area=1
curl 1111.ip138.com/ic.asp
curl ip.cn
curl cip.cc
 
 
#需要翻x墙，只返回IP
curl ip.appspot.com
 
#参考 http://unix.stackexchange.com/questions/22615/how-can-i-get-my-external-ip-address-in-bash
#有人给了以下测试方法
 
wget https://raw.githubusercontent.com/rsp/scripts/master/externalip-benchmark
chmod a+x externalip-benchmark
./externalip-benchmark