1、百度

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1、http://sp0.baidu.com/8aQDcjqpAAV3otqbppnN2DJv/api.php?query=192.168.0.0&co=&resource_id=6006&oe=utf8
例：http://sp0.baidu.com/8aQDcjqpAAV3otqbppnN2DJv/api.php?query=192.168.0.0&co=&resource_id=6006&oe=utf8
2、http://opendata.baidu.com/api.php?query=[ip地址字串]&co=&resource_id=6006&oe=utf8
例：http://opendata.baidu.com/api.php?query=192.168.0.0&co=&resource_id=6006&oe=utf8
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2、阿里巴巴

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http://ip.taobao.com/service/getIpInfo.php?ip=[ip地址字串]
例：http://ip.taobao.com/service/getIpInfo.php?ip=192.168.0.0
返回值：{"code":0,"data":{"ip":"192.168.0.0","country":"XX","area":"","region":"XX","city":"内网IP","county":"内网IP","isp":"内网IP","country_id":"xx","area_id":"","region_id":"xx","city_id":"local","county_id":"local","isp_id":"local"}
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3、国际化显示

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http://ip-api.com/json/[ip地址字串]?lang=zh-CN
例：http://ip-api.com/json/114.114.114.114?lang=zh-CN
返回值：{"as":"AS174 Cogent Communications","city":"北京","country":"中国","countryCode":"CN","isp":"China Unicom Shandong Province network","lat":39.9042,"lon":116.407,"org":"NanJing XinFeng Information Technologies, Inc.","query":"114.114.114.114","region":"BJ","regionName":"北京","status":"success","timezone":"Asia/Shanghai","zip":""}
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4、126

http://ip.ws.126.net/ipquery?ip=[ip地址字串]
例：http://ip.ws.126.net/ipquery?ip=192.168.0.0
返回值：var lo="广东省", lc="广州市"; var localAddress={city:"广州市", province:"广东省"}
5、太平洋

http://whois.pconline.com.cn/jsFunction.jsp?callback=jsShow&ip=[ip地址字串]
例：http://whois.pconline.com.cn/jsFunction.jsp?callback=jsShow&ip=192.168.0.0
返回值：if (window.jsShow){jsShow(' 局域网','');
6、360

http://ip.360.cn/IPQuery/ipquery?ip=[ip地址字串]
例：http://ip.360.cn/IPQuery/ipquery?ip=192.168.0.0
返回值：{"errno":0,"errmsg":"","data":"\u5c40\u57df\u7f51"

附录：还可以通过抓取源码从几个网站获取IP信息

http://www.hao7188.com/ 此网站获取到的数据比较详细，推荐。
http://www.ip138.com/ 老牌的IP查询网站
http://www.ip.cn/ 比较知名的IP查询网站
http://myip.com.tw/ 来自台湾的IP查询网站
http://www.net.cn/static/customercare/yourip.asp 万网获取本地公网IP地址

Z-Blog：http://www.361wx.com