Geoip lookup in ruby
mouse 66 · person cloud · link
Last update
2023-10-27
2023
10-27
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If you use the ipv4-num database, it gives the IP address ranges in decimal format.

You can then take an incoming IP address and convert it to decimal:

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require 'ipaddr'   
ip = IPAddr.new "[10.0.2.15](https://10.0.2.15)"   
ip_int = ip.to_i

Then you can query the ip-location-db using the decimal (i.e. where ip_int >= ip_range_start and ip_int <= ip_range_end).


Source reddit