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Re: BGP noob needs monitoring advice
From: Andree Toonk <andree+nanog () toonk nl>
Date: Wed, 21 Dec 2011 09:31:58 -0800

Hi Vinny,

.-- My secret spy satellite informs me that at 11-12-21 5:17 AM Vinny Abello wrote:

Unless I'm misunderstanding something, I'm concerned regarding the IPv4 bogon list on http://bgpmon.net/showbogons.php?inet=4 . It 
clearly includes several /8's that should not be there. The data seems to be stale as if some job is no longer pulling the updated data. It 
states it's being pulled from http://www.cymru.com/Documents/bogon-bn-nonagg.txt , but that clearly does not contain 100/8, 5/8, 181/8, 
49/8 and a few others... and hasn't for quite some time.

The http://bgpmon.net/showbogons.php?inet=4 page show a list of bogons that were announced at a certain point in time, so the page show historical announcements as well (check the date).

For example the last 100/8 bogons were detected on 2010-10-29, at that time it was still considered a bogon.

The list is not stale, there's just very few IPv4 bogons left :)
We do still see RFC1918 announcements:

And of course IPv6 bogons, Last month for example: 18c::/16


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