inet6num: 2001,4070,,/32 netname: PL-TASK-20040712 country: PL org: ORG-TUoG1-RIPE admin-c: SP547-RIPE tech-c: DK3003-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: TASK-GDA-PL-MNT mnt-lower: MNT-TASK-GDA-PL mnt-lower: TASK-GDA-PL-MNT mnt-routes: MNT-TASK-GDA-PL notify: firstname.lastname@example.org created: 2004-07-12T10,27,56Z last-modified: 2016-09-12T08,06,38Z source: RIPE organisation: ORG-TUoG1-RIPE org-name: Technical University of Gdansk, Academic Computer Center TASK org-type: LIR address: ul.Narutowicza 11/12 address: 80-233 address: Gdansk address: POLAND phone: +48583471077 fax-no: +48583471006 e-mail: email@example.com admin-c: DK3003-RIPE admin-c: SP547-RIPE mnt-ref: AS5550-MNT mnt-ref: TASK-GDA-PL-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: TASK-GDA-PL-MNT abuse-c: TASK2-RIPE created: 2004-04-17T11,48,10Z last-modified: 2016-09-12T08,06,49Z source: RIPE person: Dariusz Klimowicz address: Academic Computer Center TASK address: Gdansk University of Technology address: ul. Narutowicza 11/12 address: 80-233 Gdansk address: Poland phone: +48 58 3472321 fax-no: +48 58 3471006 e-mail: firstname.lastname@example.org nic-hdl: DK3003-RIPE notify: email@example.com mnt-by: TASK-GDA-PL-MNT created: 1970-01-01T00,00,00Z last-modified: 2013-12-17T08,58,16Z source: RIPE person: Slawomir Polomski address: Academic Computer Center TASK address: Gdansk University of Technology address: ul. Narutowicza 11/12 address: 80-233 Gdansk address: Poland phone: +48 58 3471852 fax-no: +48 58 3471006 e-mail: firstname.lastname@example.org nic-hdl: SP547-RIPE notify: email@example.com mnt-by: TASK-GDA-PL-MNT created: 1970-01-01T00,00,00Z last-modified: 2013-12-17T08,59,42Z source: RIPE route6: 2001,4070,,/32 descr: TASK Academic Computer Centre descr: Gdansk University of Technology, Poland origin: AS5550 mnt-by: TASK-GDA-PL-MNT created: 2010-04-21T10,47,36Z last-modified: 2010-04-21T10,47,36Z source: RIPE
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.