Comcast cust cannot reach Chris Boyd's IP x.x.x.x (was Problem from Comcast Network to The Planet)

Message: 7
Date: Fri, 5 Mar 2010 17:40:45 -0600
From: Chris Boyd <>
Subject: Re: Problem from Comcast Network to The Planet
Message-ID: <>
Content-Type: text/plain; charset=us-ascii

I don't know what's going on in the Comcast network, but I've been having
similar fits with a single IP address in my network. Comcast can get to
nearby IP addresses in the same /24 no issue. The Comcast customer in my
case is in Florida, and I get to them via TWTelecom.

I know it's not my net, and TWT was very helpful and knows it's not their

Attempts to get Comcast to look into it seem to end with them pinging their
customer's IP address from the Comcast support center and terminating the
call "since they can reach them."



Maybe Comcast abuse is blackholing the host? What is the host IP? Is it
more than one Comcast customer unable to reach that host? What is the IP of
the Comcast customer(s) unable to reach it? What do traces from the host to
the customer and from customer to host look like?