IM'ing with Dave he's asked me to publicly post the comments I had made to the list ��:)

On Sun, Sep 20, 2015 at 3:26 PM, Dave Mill <davemill@gmail.com> wrote:

-An IP delegated by a RIR for use by an NZ organisation?

-An IP that appears on peering exchanges in NZ?��

-An IP that appears in domestic tables offered by "domestic transit" providers?

So are CloudFlare's advertisements from their NZ POP to NZ internet exchanges and in domestic tables of transit providers NZ's IPs or not?

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-An IP that is sourced by a NZ ASN? And what are NZ ASNs?
-An IP that GeoIP shows is in NZ?

GeoIP is where this gets really interesting. The level of terribleness of GeoIP is amazing. Over the last few years in the various global networks I have run, I've seen behaviors such as Brazilian users being GeoIP tagged as residing in Sydney - creating some *interesting* routing and delay behavior for those users :). Moral of the story is that GeoIP is a terrible way to classify traffic, hence why many global content networks lean towards Anycast to route users to their content.

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All of those seem like good definitions of an NZ IP to me but they are all very different.

Are they good definitions? I would struggle to see any of them as actually defining clearly what a NZ IP is!

HTH,

Cheers,

Tim