Challenge #3: GeoIP lookup

For this challenge, we want to lookup the geographical region for IP addresses.

A list of IPv4 addresses is given to us. We’re supposed to output the name of the country this IP is most likely originating from.

We should use the open data lookup datasource from to do the lookup.


Use the start.dfl (37.8 KB) file to get started.

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The solution is up. Watch the complete screencast for the full-length explanation.

Get the solution.dfl (67.7 KB) flow!

The websites I used in the screencast:

IP Calculator:

Another IP Calculator:

Verification Service: