Quote:
Originally Posted by ProG
It's dependent on how good your IP -> location database is, not the programmer.
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This. I've used several prebuilt systems and threw together my own SQL db based upon public databases. MaxMind is the most common, but the freebie's only so good.
That's why I usually just do country

or county based with MaxMind's free tool. The pay-for-updates one is usually spot on. Borked's usually puts me in Northern California; the most recent MaxMind (actually 06-1-09+) puts me just a city away.