CIDR Last modified: Friday, November 07, 2003
Short for Classless Inter-Domain Routing, an IP addressing scheme that replaces the older system based on classes A, B, and C. With CIDR, a single IP address can be used to designate many unique IP addresses. A CIDR IP address looks like a normal IP address except that it ends with a slash followed by a number, called the IP network prefix. For example: 172.200.0.0/16 The IP network prefix specifies how many addresses are covered by the CIDR address, with lower numbers covering more addresses. An IP network prefix of /12, for example, can be used to address 1,048,576 former Class C addresses. CIDR addresses reduce the size of routing tables and make more IP addresses available within organizations. CIDR is also called supernetting.
•E-mail this definition to a colleague• For internet.com pages about CIDR . Also check out the following links! CIDR overview  Overview of CIDR with links to related Request for Comments documents. This page is hosted by Pacific Bell Internet.	Addressing Internet Protocols DDR hot potato routing IP address routing Give Us Your Feedback CIDR Products : Top Store Offers: Omni Supplements  2.56Bragg APL CIDR VINGR,OG,RAW,UNF Amazon  12.10APPLE CIDER VINEGAR PLUS Omni Supplements  4.08Bragg APL CIDR VINGR,OG,RAW,UNF Amazon  14.29 Amazon  33.744 VALUE PACK! You are buying FOUR of Only Natural Apple Cider Vinegar Plus 90 cap Slows down the absorption of fat and normalizes weight.For over 2000... Compare all matches: 0 Store Offers