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My company has a local network with hosts on public IP range 199.5.x.x obtained from our ISP and a subnet of 255.255.255.0. We do not use DHCP. When the number of users have increased and we are running out of IPs, we would like to upgrade our network from class C to class B to accommodate more hosts. Is there any way I can do this through the use of subnets without involving the ISP?
1You need all your hosts to be on public IPs? (all you hosts are public servers?) – laurent – 2012-10-30T14:48:27.910