At 01:59 PM 4/5/96 -0800, Michael Dillon wrote:

The core of the US Internet, also known as the default-free core, no longer follows a backbone topology. The core is composed of the major NSP's who operate national backbones providing national transit and who interconnect at all or most of the public exchange points.

Also, it would preferable to omit 'US' from the above; the Internet core doesn't reside solely in the United States. :-) - paul