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most accurate way to map IP addresses to geographic locations

Hi,

I need advice on how to accurately mapping an IP address to its geographic location. There are several candidates that I figured out...

ip2location
WHOIS
GeoSelect
Google analytics' map overlay
open source http://www.ipligence.com/free-ip-database

I have never used any. You might have better recommendations.

One issue is that most of the mapping are based on ISP registration. It is possible that an ISP is located in one city, but the actual user is in another city. How severe is this issue and are there better solutions?

Thank you very much for your advice!

Gordon

santoshmotwani

ip2location uses ISP based registration and yes ISP based registration is not accurate as you said that ISP is located in one city, but the actual user can be in another city.

You can try Geobytes , i have heard about it but never used it

alanpetersen

I recently used WhatIsMyIPAddress.com to get location info for a client

(e.g. http://whatismyipaddress.com/ip/10.10.37.29)

It seems to do pretty well getting to the zip code.

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profgeek

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gaog66

ASKER

Hi alanpetersen,

Thanks a lot for your information. May I know the specific area of your application (i.e., US nation-wide, or a certain state)? Also do you have an assessment of how accurate the zipcodes are?

Best,

Gordon

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Reddustee

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Qlemo

This question has been classified as abandoned and is being closed as part of the Cleanup Program. See my comment at the end of the question for more details.