How to locate location of the user

such as philippines, US, canada

[camilord]

i've been wondering how do they detect that i came from philippines, US, canada, china, or korea...

they also can detect what city...

just an example is in [ip-address.#*$!...]

can anybody give me an idea how to do this?

thanks...

[maccas]

easy to detect what country (do a web search for country ip database), impossible to detect which city with any reliability unless everyone lives in the same city as their ISP.

[adb64]

Search for ip to location and you will find several free and paid databases which can do ip to country/city/isp/latitude,longitude etc lookup.