nanog mailing list archives

Private ASNs in the wild


From: Jason Lixfeld <jason () lixfeld ca>
Date: Thu, 11 Dec 2014 17:08:16 -0500

I just fat fingered a regex that was intented to show how many private ASNs we’re using on our network for various 
things.  The results of the fat fingers showed that there are an astronomical number of private ASNs in the wild.  I 
checked the CIDR report, and those ASNs are shown there in a specific Bogon ASN report, but I’m surprised that as far 
as I can recall, there haven’t been any efforts made by the good netizens around these parts to bring awareness to this 
issue.

Do we feel that it’s not that big of a deal?  Have we not really been paying attention?  Some other reason this seems 
to be a rather muted topic?

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