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  2. Classless Inter-Domain Routing - Wikipedia

    en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

    Classless Inter-Domain Routing (CIDR / ˈ s aɪ d ər, ˈ s ɪ-/) is a method for allocating IP addresses for IP routing. The Internet Engineering Task Force introduced CIDR in 1993 to replace the previous classful network addressing architecture on the Internet .

  3. Reserved IP addresses - Wikipedia

    en.wikipedia.org/wiki/Reserved_IP_addresses

    Download QR code; Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... Address block (CIDR) First address Last address

  4. IP address - Wikipedia

    en.wikipedia.org/wiki/IP_address

    The subnet mask or CIDR notation determines how the IP address is divided into network and host parts. The term subnet mask is only used within IPv4. Both IP versions however use the CIDR concept and notation. In this, the IP address is followed by a slash and the number (in decimal) of bits used for the network part, also called the routing ...

  5. IPv4 - Wikipedia

    en.wikipedia.org/wiki/IPv4

    CIDR was designed to permit repartitioning of any address space so that smaller or larger blocks of addresses could be allocated to users. The hierarchical structure created by CIDR is managed by the Internet Assigned Numbers Authority (IANA) and the regional Internet registries (RIRs).

  6. Default route - Wikipedia

    en.wikipedia.org/wiki/Default_route

    The default route in Internet Protocol Version 4 (IPv4) is designated as the zero address, 0.0.0.0 / 0 in CIDR notation. [2] Similarly, in IPv6, the default route is specified by :: / 0. The subnet mask is specified as / 0, which effectively specifies all networks and is the shortest match possible. A route lookup that does not match any other ...

  7. IPv6 - Wikipedia

    en.wikipedia.org/wiki/IPv6

    In IPv4, complex Classless Inter-Domain Routing (CIDR) methods were developed to make the best use of the small address space. The standard size of a subnet in IPv6 is 2 64 addresses, about four billion times the size of the entire IPv4 address space.

  8. Subnet - Wikipedia

    en.wikipedia.org/wiki/Subnet

    Since the introduction of CIDR, however, the assignment of an IP address to a network interface requires two parameters, the address and a subnet mask. Given an IPv4 source address, its associated subnet mask, and the destination address, a router can determine whether the destination is on a locally connected network or a remote network.

  9. File:IPv6 CIDR table-en.svg - Wikipedia

    en.wikipedia.org/wiki/File:IPv6_CIDR_table-en.svg

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