What do the IP addresses 10.0.20.90, 172.16.10.1, and 192.168.10.5 have in common?

The IP addresses 10.0.20.90, 172.16.10.1, and 192.168.10.5 are all classified as private IP addresses. The significance of being private and nonroutable lies in their intended use within local networks, rather than for direct communication over the internet.

Private IP addresses are defined by specific ranges set by the Internet Engineering Task Force (IETF) in RFC 1918, which includes:

• The 10.0.0.0 to 10.255.255.255 range

• The 172.16.0.0 to 172.31.255.255 range

• The 192.168.0.0 to 192.168.255.255 range

These address ranges are used for internal networks, allowing devices within the same local area network (LAN) to communicate with each other without consuming a public IP address. Devices using these addresses cannot be directly addressed on the public internet; instead, they typically access the internet through a network address translation (NAT) process.

Because 10.0.20.90 falls within the first range, 172.16.10.1 is within the second, and