Private IP addresses are not routable on public networks. They cannot be accessed directly from any public network without going through some network address translation (NAT) device (router).

Private IP addresses are specified by RFC 1918. They are in the following ranges:

10.0.0.0 -10.255.255.255

172.16.0.0 -172.31.255.255

192.168.0.0 -192.168.255.255

Normally you cannot ping a private IP address unless your computer is also on that same private network.

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