• If you are not using a router, the first hop 10.xx.xx.xx address on a tracert will be your Charter UBR. The 10.xx.xx.xx address is the Charter router's private side address of your Default Gateway.
  
  
• If you tracert through the gateway, the Charter UBR private IP address will reply.
  
  
• If you tracert to your Charter's Default Gateway the UBR's public gateway IP address will reply.
  
  
• If you use a home router, the router's address may or may not show as the first hop depending on the type of router you are using.
  
  

The cable modem is just a transparent bridge and will not show on a tracert.
More information here on the tracert first hop address.

»homepage.ntlworld.com/robin.d.h.···ml#ubrip

From Stan Gunn's post here.

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by nozero
last modified: 2005-09-03 18:40:15