Good service for getting location by IP?

Question

哪个检测位置最准确。

Answer 1

http://www.maxmind.com/ 's free API will get you to country level, and city for some IPs, if you pay them you can get some more detail, this information is a good default, but not 100% accurate. It's the best I've found.

Answer 2

Here's a completely free web service

http://www.hostip.info/

Answer 3

I've used IP2Location before and it works great. The free version will only return the country but the pay versions are very accurate and will return alot more information. They have API's for a lot of common languages.

Answer 4

Geo IP PECL包和Net_GeoIP PEAR包都为PHP提供了maxmind位置数据库（在其他答案中已经提到）的接口。