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FourOneOne is a small application that allows you to look up airport codes, area codes, country codes and ZIP codes. It was inspired by the (now discontinued) Code Finder application by Andrew Zamler-Carhart.

The data comes from freely available files published by the OpenBSD and NetBSD projects.

What's New

Version 1.0.1:
  • Now uses an internal copy of the data by default (this can be changed in Preferences). This should fix problems that some users had when running with older data files.


Mac OS X 10.4 or later

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FourOneOne User Discussion

4 1


Current Version (1.x)


Downloads 3,146
Version Downloads 2,668
License Free
Date 31 Aug 2006
Platform OS X / PPC 32 / Intel 32
Price Free
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