Thanks ian, Your pointer turned out to be most valuable. If anyone else wants to know I found this table most helpful. google search result on: howto CIDR range http://www.obfuscation.org/techs/cidr-conversion-table.html On March 11, 2003 03:51 pm, you wrote: > Bill, just a tip, but read up on CIDR. Plenty of good docs out > there that explain why it is important and how it works. Trying to > explain it all would be fairly long winded. > > -ian