Shared IP addresses...

The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP

address space for private internets:

10.0.0.0 - 10.255.255.255

172.16.0.0 - 172.31.255.255

192.168.0.0 - 192.168.255.255

127.0.0.1, 127.0.0.0 is a local host ip v4

and ::1 is a local host ipv6 address..