) Lots of copanies have class A's reserved... not very ) many companies use them all... Stanford University had the 36/8 class A until the summer of '99 when they switched to 4 class B subnets: http://www.stanford.edu/group/itss/Org/Digest/Digest_August6_99.html http://www.stanford.edu/group/networking/NetConsult/ipchange/ --andy.