Partial Use Of one Regions IP Block in another

Andy Davidson andy at
Fri May 21 18:50:13 UTC 2010

On 20 May 2010, at 13:06, Net wrote:

> Are there any policies set by internet registries and/or transit providers today that prohibits organizations from using a Partially used IP Block allocated in one region say AP through APNIC to be comissioned and Propagated in another region such as EMEA serviced by RIPE?.

In some circumstances, deaggregation of your rir-assigned prefix might lead to partial reachability (some networks filter on rir minimum assignment sizes - not a problem in itself, but some unclever networks exist, that don't additionally take a default).

Whatever you announce, make sure it's irr registered too, for the networks who transit or peer with you, who automatically build pfx filters.

Happy weekend,

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