>>>>> "David" == David Comerford <davestyle@xxxxxxxxx> writes: David> I work for a hosting provider which has a few assignments of David> /19 and /20 IP blocks. At the moment we use bloody David> spreadhseets to track them in blocks of /24. On the plus side David> it does make it easy to further subnet down to /29's and David> /30's for dedicated servers. David> If we add our existing /24's to RackTables, how would we go David> about subnetting them into smaller blocks? Would it be a case David> of deleting a whole prefix and adding the split up chunks David> back in? It's not obvious, but after you add the /24 in, and then you add a /29 or something within the /24, the rest of the space gets marked as 'empty' and you can create subnets within it. -- ] He who is tired of Weird Al is tired of life! | firewalls [ ] Michael Richardson, Sandelman Software Works, Ottawa, ON |net architect[ ] mcr@xxxxxxxxxxxxxxxxxxxxxx http://www.sandelman.ottawa.on.ca/ |device driver[ Kyoto Plus: watch the video <http://www.youtube.com/watch?v=kzx1ycLXQSE> then sign the petition.