Route server: Route-server.ip.att.net

Hi, Could you give me the relevant configs explaining why when I traceroute to 12.83.43.9 on route-server.ip.att.net, the first hop is " j6300.cbbtier3.att.net (12.0.1.202)". However, when I type "show ip route 12.83.43.9", the RIB shows, "* 12.122.83.91, from 12.122.83.91, 7w0d ago". I asked som

coprorations using BGP for advertising prefixes in mid-1990s

If you are a big corporation, and it is 1995, how likely is it that you'll utilize bgp for advertising your address space to the internet? Thanks, Michael Sabino