visibility/reachability of longer-than-/24 IPv4 prefixes

Mon Oct 6 14:32:42 UTC 2014

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Dear colleagues,

In a cooperation between the RIPE NCC and ARIN we investigate the
visibility/reachability of longer-than-/24 prefixes out of ARIN's
23.128/10 IPv4 address block. This part of ARIN policy
(https://www.arin.net/policy/nrpm.html#four10) elicited much
discussion on NANOG earlier this year, so we decided to try and
measure the current state of the network with regards to
longer-than-/24 IPv4 prefixes.

We've now published a RIPE Labs article with initial analysis results:
https://labs.ripe.net/Members/emileaben/propagation-of-longer-than-24-ipv4-prefixes

Spoiler: the longer-than-/24 prefixes are not very visible/reachable.
Having route-objects improves visibility/reachability, but only a
little bit.

cheers,
Emile Aben
RIPE NCC

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