My bad, I miscounted, you are mentioning 32 Class C's, so a /19 CIDR reference should work fine. -Erik >Using CIDR, you can write it out this way: >acl mylocalsubnets { 161.241.51.0/19; }; >/19 = 32 Class C's >Since you mention 30 Class C's and not 32, you can just disallow the last two. >Hope this helps >-Erik