I believe Register.com (or any for that matter) has the right to use internal address space where ever they want. The fact that internal address space is showing in a traceroute between you and them might mean a wide range of things. In this case, Register.com 'might' be using internal address space on some(all) of their WAN links. You <-> Internet <-> Company A Router <-> WAN Link (internal IP space) <-> Company A Router <-> Web Servers Whether or not people should used RFC reserved IP space for WAN links is not a discussion I wish to have. Chris Kleban -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of Los, Ralph Sent: Wednesday, September 05, 2001 4:13 PM To: 'nanog@merit.edu' Subject: Register.com .....routing issue? Sensitivity: Confidential Hey folks, Has anyone tried to trace to Register.com's main page yet? I haven't been able to hit it, and when I try to trace down to them I end up hitting a 10.0.30.x network, then go back to public IP's...how is that possible? Anyone else having trouble connecting to them? Happy Monday! (still) Ralph M. Los Asst. Vice-President, Internet Systems and Security EnvestNetPMC rlos@envestnet.com (312) 827-3945 (direct) (312) 296-9003 (wireless w/voicemail) * If you haven't been hacked, you don't know where your vulnerabilities lie*