IP Networking

IP or Internet Protocol Networking is a large subject, so here I am only going to cover some stuff and link to the rest.

Reserved IP Addresses

There are a couple of reserved IPv4 address ranges as follows:

  • 10.0.0.0 to 10.255.255.255
  • 169.254.0.0 to 169.254.255.255: used by APIPA only
  • 172.16.0.0 to 172.31.255.255
  • 192.168.0.0 to 192.168.255.255
Further details are available on Wikipedia at Reserved IP addresses, however it is also worth considering that the ranges listed above are mostly used for Private network.

Reserved Ports

For a list of commonly allocated port number for use with TCP/IP List of TCP and UDP port numbers - Wikipedia, the free encyclopedia is a good reference.

Subnet Ranges

There is a handy calculator at IP Subnet Calculator.