Here how my old server worked for a year: ns1.xxx.xxx xxx.xxx.xxx.146 ns2.xxx.xxx xxx.xxx.xxx.147 It had broadcast at xxx.xxx.xxx.151 and gateway at xxx.xxx.xxx.145 I had 5 IP addresses at that time xxx.xxx.xxx.145/28 Now I bought more IP addresses and currently own 13 IP addresses. I want to add another server with nameservers ns1.yyy.xxx xxx.xxx.xxx.154 ns2.yyy.xxx xxx.xxx.xxx.155 However issue is that place where I bought them from gave me them like this xxx.xxx.xxx.145/29 So broadcast is xxx.xxx.xxx.159 and gateway should be xxx.xxx.xxx.153 I connected as broadcast xxx.xxx.xxx.159 and gateway xxx.xxx.xxx.145 and I was able to ping IP addresses inside LAN connection but not from outside However when I put gateway xxx.xxx.xxx.153 then I wasn't able to ping them from inside LAN neither from outside. Is there any way I could use putty to connect into my old server and connect from it's root user to new server via LAN to make changes in proper places? Since I got new IP addresses should I change old IP addresses gateway and broadcast too or that doesn't matter? How is propagation period working? it will start working when nameserver1IPaddress resolves to dnsIP1 and nameserver2IPaddress resolves to dnsIP2 or when ns1.yyy.xxx and ns2.yyy.xxx will resolve to nameserver2IPaddress and nameserver1IPaddress which will resolve to DNS addresses .. ?