Purchased IPv4 Woes

valdis.kletnieks at vt.edu valdis.kletnieks at vt.edu
Sun Mar 12 16:17:35 UTC 2017

On Sun, 12 Mar 2017 17:59:59 +0200, Chris Knipe said:

> > How do all the AS's that have their own internal blacklists find out that
> > they should fix their old listings?  (Note that this is the exact same
> > problem
> > as "We got blacklisted because of a bad customer, we axed the customer, but
> > we're still blacklisted", which has been a an unsolved problem for decades
> > now).
> >
> >
> From the REGISTRY as the ultimate custodian of the IP block.

>From Friday's routing table report.

BGP routing table entries examined:                              639225
    Prefixes after maximum aggregation (per Origin AS):          248678
    Deaggregation factor:                                          2.57
    Unique aggregates announced (without unneeded subnets):      307752
Total ASes present in the Internet Routing Table:                 56403

As 56,000 AS's all start querying each of the registries (ARIN, RIPE, APnic,
LACNIC, and AfriNic) for all 639,000 objects once a day, to see which dozen of
those got sold yesterday.

Sure, that will work. (And no, the problem isn't the number of http hits
on the registries. 35,840,000,000 hits per day is the easy part...)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 484 bytes
Desc: not available
URL: <http://mailman.nanog.org/pipermail/nanog/attachments/20170312/ca010d3b/attachment.sig>

More information about the NANOG mailing list