[123952] in North American Network Operators' Group
Re: Using private APNIC range in US
daemon@ATHENA.MIT.EDU (Fred Baker)
Thu Mar 18 12:36:02 2010
From: Fred Baker <fred@cisco.com>
In-Reply-To: <4c6b8c911003180852t6565a56fs6819aac1c6d5bbe4@mail.gmail.com>
Date: Thu, 18 Mar 2010 09:34:47 -0700
To: Jaren Angerbauer <jarenangerbauer@gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Are they using them only within their domain(s), and ARIN addresses =
outside, or are they advertising them to their upstream(s) to be =
readvertised into the backbone?
If they are using them internally and NAT'ing to the outside, they're =
not hurting themselves or anyone else. I would personally let them =
alone.
If they are advertising them outside, it adds a small prefix in the ARIN =
domain that doesn't get aggregated by the upstream. Among 300K such =
prefixes it is probably noise, but gently suggesting that they use =
something aggregatable into their upstream's allocation would help a =
little bit in that regard. What they are most likely hurting is =
themselves, really; a datagram sent to the address from an ISP outside =
themselves probably travels via Australia or an Australian ISP.
On Mar 18, 2010, at 8:52 AM, Jaren Angerbauer wrote:
> Hi all,
>=20
> I have a client here in the US, that I just discovered is using a host
> of private IPs that (as I understand) belong to APNIC (i.e.
> 1.7.154.70, 1.7.154.00-99, etc.) for their web servers. I'm assuming
> that the addresses probably nat to a [US] public IP. I'm not familiar
> enough with the use of private address space outside of ARIN (i.e.
> 192.0.0.0, 10.0.0.0, etc) but I figure if their sites are up and
> accessible it must be working for them. I'm just wondering if there
> is any recommendation or practice around this -- using private IP
> ranges from another country. Thanks.
>=20
> --Jaren
>=20
http://www.ipinc.net/IPv4.GIF
