I am building an application with a feature that has a lookup for cities/countries for IP addresses.
How often does IP registrant information generally change? If I were to use a current database, such as the one provided by MaxMind, to historical log files from 3-5 years ago, can I expect a reasonable degree of accuracy?
Obviously this kind of thing isn't all that accurate to begin with. I am simply trying to estimate how useful (or useless) a current IP geolocation database is on old data.