如果得到 ISP 比较困难，得到 tier-1 归属可行嘛？
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感谢
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ThirdFlameDec 1, 2014
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也可以去 17mon.cn 也很准确
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yinian1992Dec 1, 2014 via Android
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APNIC Whois
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ChiChouDec 1, 2014
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国外的有 GEOIP2，国内 17mon，都提供了多种语言的 API 接口
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claliuFeb 10, 2015
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The LookingGlass by Level(3)
http://lookingglass.level3.net/ |
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claliuFeb 11, 2015
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PCCW Global Ping and Traceroute
http://lookingglass.pccwglobal.com/ |
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