IP Address and Location

I am trying to match up IP addresses to determine the location of the IP address.  I am primarily concerned with flagging IP addresses that are from outside the U.S.  

I was able to download a file that shows a range of IP addresses by Country. This file is >200K records.  My thought was to just use the US IP ranges (19K records) and just flag any that came from outside the US.

Below is an example of 3 records for US IP Ranges:
IP Address Range is 18332160 - 18332415
IP Address Range is 34603008 - 34603263
IP Address Range is 34607872 - 34608127

With the new Quick Base Audit records I can get the IP addresses for log-ins and use that in a table, but have not figured a way to take the IP address and cross-reference it against the list of 19K ranges.  I tried a formula field with an If statement similiar to ([IP address] > 18332160 AND [IP Address]<18332415) OR ([IP address] > 34603008 AND [IP Address]<34603263) ... repeat for 19K rows, but the formula is too large.

I am trying this with not only the Quick Base audit log-in records, but for other systems we utilize which we'd like to verify log-ins are only from US IP addresses.  

Thank you in advance.