Which of these would be an RFC 1918 address? Pick two.
F) Just put down a bunch of numbers with some random punctuation
The answer: C) 10.155.5.23 and D) 192.168.99.4
RFC 1918 addresses are also called private IP addresses, and they’re commonly used on internal private networks to ease the management of IP subnets. You can use as many RFC 1918 addresses as you need on your internal network, but you’ll have to NAT these addresses if you need to route them across the Internet.
Want to know more? Watch “An Overview of IPv4 and IPv6.”
The primary IP technologies used today are IP version 4 and IP version 6. In this video, you’ll learn the differences between these two technologies, the differences between public and private IP addressing, and how automatic private IP addressing (APIPA) can be used to provide connectivity.