IP Addresses: How to get one? Network(network portion) Get allocated portion of isPs address space ISPs block 11001000000101110001000000000000200.23.16.0/20 日 Organization0110010000010111000100000020.23160/23 Organization1110010000001011100010010000000200.23180/23 Organization211001000000101110001010000000002002320.0/23 Organization711001000000101110001111000000000200.2330.023 9-26-06 Lecture 9: IP Packets 99-26-06 Lecture 9: IP Packets 9 IP Addresses: How to Get One? Network (network portion): • Get allocated portion of ISP’s address space: ISP's block 11001000 00010111 00010000 00000000 200.23.16.0/20 Organization 0 11001000 00010111 00010000 00000000 200.23.16.0/23 Organization 1 11001000 00010111 00010010 00000000 200.23.18.0/23 Organization 2 11001000 00010111 00010100 00000000 200.23.20.0/23 ... ….. …. …. Organization 7 11001000 00010111 00011110 00000000 200.23.30.0/23