IP Types & Special Addresses

Static/dynamic, unicast/multicast/broadcast/anycast, loopback and other special ranges

• Special IP Addresses (Loopback, Link-Local and More) The reserved IP addresses worth knowing — loopback 127.0.0.1, 0.0.0.0, link-local 169.254.0.0/16, broadcast, multicast and documentation ranges.
• Unicast, Multicast, Broadcast and Anycast The four ways IP traffic can be addressed — unicast, multicast, broadcast and anycast — explained with real-world examples.
• What Is 127.0.0.1 and localhost? 127.0.0.1 is the IPv4 loopback address, reached by the name "localhost". Learn what the loopback interface does, the whole 127.0.0.0/8 range, and the IPv6 form ::1.
• Static vs Dynamic IP Addresses The difference between static and dynamic IP addresses, the role of DHCP, and when to use each for servers and clients.