On Sat, 30 Jun 2007 08:05:15 -0400 Bob Goodwin - W2BOD <bobgoodwin@xxxxxxxxxxxx> wrote: > > What is the correct notation for blocking a range of addresses in my router? > > If I block 64.18.5.13 it simply moves up to 64.18.5.14. > > I thought the proper way to do it was 64.18.5.0/255 The / notation is address/number of bits of significance eg 192.168.1.0/24 I suspect you want 64.18.5.0/24 Alan