RE: [MLUG - DISCUSSION] Where is an IP address?

["Spurling, Shannon" <EMAIL:PROTECTED>]

I would like to point out that the way you just did that has nothing to do with the actual location of that IP address. You are depending on the reliability of the person who placed that entry into their DNS server. That can be a good rule of thumb, but don't rely on it in life and death situations. :-)
In reality, there is no relation between geography and IP addresses, other than an IP is assigned to someone who resides somewhere in space-time. Another thing to keep in mind is, if I'm sending a packet to a machine in Los Angeles, CA, it doesn't have to go west when it leaves my administrative domain. It's a way common misconception. If there is one provider, with one Autonomous System (It's like a BGP domain) on my east, and they have a connection in that AS to the provider in LA. If I have a provider on my west side, and they have to go through a second AS to get to the same provider in LA, I'll take the one to the east. That's layer three. The physical layer gets even better. 
In fact, when MOREnet had the DS-3 backbone provided by AT&T, all the connections that came into Jefferson City were backhauled to St. Louis, and then came back to Jefferson City. Including the one between Jefferson City and Springfield. Apparently that's not uncommon. It's because you don't buy cables that go from point A to point B, you buy a cable that gets muxed onto a bigger cable that lots of cables and services are muxed onto. The big cable goes back to a central point where they are demuxed and muxed back onto the big cable that goes to the destination. Weird, eh?


Shannon Spurling
WAN Engineer -Specialist

MOREnet, Network Services, Core Network
3212 LeMone Industrial Blvd.
Columbia, MO 65201

Main:(573) 884-7200   Fax:(573)884-6673

EMAIL:PROTECTED
EMAIL:PROTECTED


-----Original Message-----
From: Marcus Semanek [mailto:EMAIL:PROTECTED]
Sent: Tuesday, April 02, 2002 1:33 AM
To: EMAIL:PROTECTED
Subject: Re: [MLUG - DISCUSSION] Where is an IP address?


That's what my hostmask always looks like and yeah
it's carrolton, tx right outside of dallas, i used to
live there.  I don't know why i get that here in
columbia though.

-marcus

--- Stephen Montgomery-Smith
<EMAIL:PROTECTED> wrote:
> Thanks everyone for all your help.
> 
> Stephen
> 
> 
> 
> Mike Miller wrote:
> > 
> > On Mon, 1 Apr 2002, F Vernon Green wrote:
> > 
> > > It Says it is in Carlton Texas the node name is
> > > crtntx1-ar1-002-156.crtntx.dsl.gte.net
> > 
> > Carrollton, I think:
> > 
> >
> http://www.sarangworld.com/TRACEROUTE/showdb-2.php3
> > 
> > Mike
> > 
> > > I am interested in figuring out where 4.42.2.156
> is geographically
> > > located.  How would I find this out?
> > 
> > --
> > To unsubscribe, go to
> http://mlug.missouri.edu/members/edit.php
> > 
> > Archives are available at
> http://mlug.missouri.edu/list-archives/
> 
> -- 
> Stephen Montgomery-Smith
> EMAIL:PROTECTED
> http://www.math.missouri.edu/~stephen
> --
> To unsubscribe, go to
> http://mlug.missouri.edu/members/edit.php
> 
> Archives are available at
http://mlug.missouri.edu/list-archives/


__________________________________________________
Do You Yahoo!?
Yahoo! Tax Center - online filing with TurboTax
http://http://taxes.yahoo.com/
--
To unsubscribe, go to http://mlug.missouri.edu/members/edit.php

Archives are available at http://mlug.missouri.edu/list-archives/
--
To unsubscribe, go to http://mlug.missouri.edu/members/edit.php

Archives are available at http://mlug.missouri.edu/list-archives/