A Bit of Coding

Posted on Jul 2, 2004

Decided it was time to flex my coding muscles this week so I’ve put together a little tool that converts IP Addresses, URL’s and Host names into Autonomous System numbers and gives a few other little tidbits while it’s at it too. It can be found here:

AS Number Tool

Of course it can be found on the old homepage too. It all came about because I couldn’t find anything to do this for me – needless to say there’s a command line version that I use personally too. Now most people reading this are probably wondering what the hell an Autonomous System is – well first off I’d like to clarify that I mean an Internet Autonomous System, not a Mathematical one.

To use a poor analogy, think of them as the country codes and area codes used in the telephony world – without them you wouldn’t have long distance calling because the exchanges and switches would have no idea where to send your call to. Well AS numbers are something like that in the internet routing world.

Go to Wikipedia to learn more about them.

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