There are a million services out there where you type in an IP address and get an estimate as to its location. A few months ago I stumbled across a free IP geolocation database because I find myself using online services from time to time - I was sort of surprised how often it’s helpful to know where traffic is coming from (outside of Google Analytics, etc.).

Using the database I found, I threw together a script that takes a list of domain names and / or IP addresses and gives you an idea of where it lives:

dan-lecocqs-macbook:~ dlecocq$ ipquery google.com 209.85.171.100 Mountain View, US 94043 37.4192 -122.0570 dan-lecocqs-macbook:~ dlecocq$ ipquery yahoo.com 68.180.206.184 Sunnyvale, US 94089 37.4249 -122.0070 dan-lecocqs-macbook:~ dlecocq$ ipquery apple.com 17.251.200.70 Cupertino, US 95014 37.3042 -122.0950 dan-lecocqs-macbook:~ dlecocq$ ipquery mines.edu 138.67.1.8 Golden, US 80401 39.7146 -105.2430