[BBLISA] Amazon EC2 Oddly Rejecting Very Specific IP Addresses

[Theo Van Dinter]

On Tue, Apr 13, 2010 at 1:03 PM, Richard 'Doc' Kinne <rkinne at aavso.org> wrote:
> When my customer tries to do a traceroute from his place to my server he
> doesn't even get out of his router:
>
> tracert 75.101.149.255
> Tracing route to [75.101.149.255] over a maximum of 30 hops:
>   1     1 ms    <1 ms    <1 ms  www.routerlogin.com [10.1.1.1]
>   2     *        *        *     Request timed out.
[...]
> There is a part of me that thinks there may be something wrong somehow with
> my customer's address. When I do a "whois" on the customer's address it
> comes back as being owned by IANA, which doesn't seem right at all. Also
> when I try a traceroute to his address *I* don't get past my router in two
> totally separate locations (work, that has one ISP, and home, which has a
> very different ISP).

10.0.0.0/8 is non-routable (http://www.faqs.org/rfcs/rfc1918.html),
they'd have to go out through NAT.  You'd want to get their public
IP(s) if you want to do any lookups or poke from the outside.