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What is a private IP address and what are the private IP ranges?

April 26, 2017IP ip address private ranges

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What is a private IP address and what are the private IP ranges?

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Any IP address that falls within specified ranges is a private IP address and is non-routable on the Internet. These addresses are reserved for use only within a private or corporate network and cannot be seen outside the private networks. These private addresses are translated at the company’s firewall into an external (public) IP address, which will be some address that does not fall within these ranges. 10.0.0.0/8=10.0.0.0 – 10.255.255.255 192.168.0.0/16=192.168.0.0 – 192.168.255.255 172.16.0.0/12=172.16.0.0 – 172.31.255.255 An address is Private if it starts with: 10 or 192.168 or 172.[16-31] It is possible for anyone to see their external (public) IP by going to any of a number of sites that provide this information as a free service. One example that’s easy to remember is http://whatismyip.com.