Ask HN: What are some fast geolocation databases?

3 pointshelwr2 comments

i.e need to lookup physical address based on IP in msec

GeoIP is fast and there's free versions of the database.

http://www.maxmind.com/app/benchmark

http://www.maxmind.com/app/geolitecity

While I haven't tried them out myself, GeoIP should be a good bet (you can check if they meet your needs rather quickly by hitting their API) http://www.maxmind.com/app/api

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