Checking bogon status of new address space

Steve Dalberg steve+nanog at
Fri May 8 09:44:58 CDT 2009

Having recently received some de-bogon'ed addressing in or about this March,
I can tell you that the one problem I had was people that had not updated
their Bind Bogon filters ( and so were not
responding to requests from our address space, so we just moved our dns
cache boxes back to our older Level3 address space.  Took a while to figure
that one out though.


2009/5/7 Oliver Hookins <oliver.hookins at>

> Hi,
> my company has just been allocated some new IPv4 address space, and I want
> to do some sort of automated testing to find out any ASs out there that
> haven't removed the /8 it's on from their bogon list (the allocation to our
> local registry only occurred in November last year).
> Has anybody attempted to do this? It is worth bothering? Currently I'm
> considering pulling out all the endpoint ASs out of the BGP table, finding
> at least one subnet for each of them and attempting to ping or reach other
> common ports on a single IP for each AS from our currently working
> address space, and then the new address space and comparing results.
> --
> Regards,
> Oliver Hookins
> Anchor Systems

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