Hack the Route Start free Open app Addressing
Private addresses
Address ranges any organisation may use inside, never routed on the internet: 10/8, 172.16/12, 192.168/16.
Homes and offices number their devices from these ranges and reach the internet through NAT. 127.0.0.1 is
loopback: the machine itself, never on the network, so a service listening only there is reachable only
locally.