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Comment by JonnieCache | Hacker News Reader

Does anyone know of a site which returns nothing but your IP address in text/plain when hit with a GET request?

Such a thing would be useful for scripting purposes.

http://ifconfig.me/ and useful stuff other than IP address (scroll down)

There's also http://jsonip.com/, which can be useful for scripting.

A competent programmer could build it in the time it took you to read this.

Yes indeed. However this competent programmer has paid work to be doing, and possesses the certain knowledge that such a thing exists already.

Anyway, I'll bite:

    lambda { |env| [200, {'Content-Type'=>'text/plain'}, [Rack::Request.new(env).ip]] }

A competent programmer should avoid unnecessary complexity as well, I suppose, but you are equally right.