% This is the AfriNIC Whois server. % Note: this output has been filtered. % To receive output for a database update, use the -B flag. % Information related to '2c0f:fd58::/32' % Abuse contact for '2c0f:fd58::/32' is 'firstname.lastname@example.org' inet6num: 2c0f:fd58::/32 netname: Vox-Telecom descr: Vox Telecom Ltd country: ZA org: ORG-DPBO1-AFRINIC admin-c: NOCH1-AFRINIC tech-c: NOCH1-AFRINIC status: ALLOCATED-BY-RIR remarks: Further details at http://www.voxtelecom.co.za/ remarks: abuse e-mail: <email@example.com>, phone: +27 (0)11 809-1500 mnt-by: AFRINIC-HM-MNT mnt-lower: VOXTELECOM-MNT mnt-domains: VOXTELECOM-MNT mnt-irt: IRT-VOXTELECOM source: AFRINIC # Filtered parent: 2c00::/12 organisation: ORG-DPBO1-AFRINIC org-name: Vox Telecom Ltd org-type: LIR country: ZA remarks: Refer to http://www.datapro.co.za/ for more info remarks: abuse e-mail: <firstname.lastname@example.org>,phone:+27 (0)11 remarks: phone:+27 (0) 809-1500 address: Block C, Rutherford Estate address: 1 Scott Street, address: Waverley address: Gauteng address: Johannesburg 2090 phone: +27118091500 phone: +27878050500 phone: +27 87 805 1574 phone: +27 83 325 8920 admin-c: NOCH1-AFRINIC admin-c: JL23-AFRINIC tech-c: NOCH1-AFRINIC mnt-ref: AFRINIC-HM-MNT mnt-ref: DATAPRO-MNT mnt-by: AFRINIC-HM-MNT source: AFRINIC # Filtered person: NOC Hostmaster nic-hdl: NOCH1-AFRINIC address: Vox Telecom (Pty) Ltd address: Block B, Rutherford Estate address: 1 Scott Street, address: Waverley, address: JHB address: Gauteng address: Johannesburg 2090 address: South Africa phone: +27 (0)11 809-1500 source: AFRINIC # Filtered
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.