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The method divides the IP address space for Internet Protocol version 4 (IPv4) into five address classes based on the leading four address bits. Classes A, B, and C provide unicast addresses for networks of three different network sizes. Class D is for multicast networking and the class E address range is reserved for future or experimental ...
Special address blocks Address block Address range Number of addresses Scope Description ... In use for multicast [10] (former Class D network) 233.252.0.0/24
"IPv4 Addresses - the Complete Class A List". Infocellar. 5 April 2003. Archived from the original on 17 April 2011 "INTERNET PROTOCOL V4 ADDRESS SPACE". DonkBoy Internet. 30 June 2005; Cromwell, Bob (13 November 2008). "The /8 or Class A Networks". Bob Cromwell. Archived from the original on 17 December 2010
Contiguous range of 256 Class C blocks Since two private networks, e.g., two branch offices, cannot directly interoperate via the public Internet, the two networks must be bridged across the Internet via a virtual private network (VPN) or an IP tunnel , which encapsulates packets, including their headers containing the private addresses, in a ...
Both the IPv4 and the IPv6 specifications define private IP address ranges. [ 1 ] [ 2 ] Most Internet service providers (ISPs) allocate only a single publicly routable IPv4 address to each residential customer, but many homes have more than one computer , smartphone , or other Internet-connected device.
The first three bits of the most significant octet of an IP address were defined as the class of the address. Three classes (A, B, and C) were defined for universal unicast addressing. Depending on the class derived, the network identification was based on octet boundary segments of the entire address. Each class used successively additional ...
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This originates from the classful network design of the early Internet when this group of addresses was designated as Class D. The CIDR notation for this group is 224.0.0.0 / 4. [1] The group includes the addresses from 224.0.0.0 to 239.255.255.255. The address range is divided into blocks each assigned a specific purpose or behavior. [2]