1、获取外网IP地址

地址：

http://pv.sohu.com/cityjson?ie=utf-8

返回结果：

var returnCitySN = {"cip": "39.***.***.***", "cid": "370000", "cname": "山东省"};

2、获取IP地址详细信息

地址：

http://ip.taobao.com/service/getIpInfo.php?ip=39.***.***.***

返回结果：

{"code": 0,"data": {"ip": "39.***.***.***","country": "中国","area": "","region": "山东","city": "青岛","county": "XX","isp": "联通","country_id": "CN","area_id": "","region_id": "370000","city_id": "370200","county_id": "xx","isp_id": "100026"}
}