inet6num: 2001,628,,/29 netname: AT-ACONET-19990920 country: AT org: ORG-AA1-RIPE admin-c: MP4729-RIPE tech-c: AN1555-RIPE status: ALLOCATED-BY-RIR notify: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: ACONET-LIR-MNT mnt-lower: ACONET-LIR-MNT mnt-routes: ACONET-LIR-MNT mnt-irt: IRT-ACOnet-CERT created: 2012-08-22T12,09,22Z last-modified: 2016-06-08T10,56,57Z source: RIPE organisation: ORG-AA1-RIPE org-name: ACONET org-type: LIR address: Computer Center - ACOnet Universitaetsstrasse 7 address: A-1010 address: Vienna address: AUSTRIA phone: +43 1 4277 14030 fax-no: +43 1 4277 9 140 e-mail: firstname.lastname@example.org admin-c: MP4729-RIPE admin-c: CP8-RIPE tech-c: AN1555-RIPE abuse-c: AA25469-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: ACONET-LIR-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: ACONET-LIR-MNT created: 2004-04-17T10,58,09Z last-modified: 2016-06-08T11,09,15Z source: RIPE role: ACOnet NOC address: Vienna University Computer Center address: Universitaetsstrasse 7 address: A-1010 Vienna address: Austria phone: +43 1 4277 14030 fax-no: +43 1 4277 9140 e-mail: email@example.com admin-c: CP8-RIPE tech-c: WW144 tech-c: HM3550-RIPE tech-c: MP4729-RIPE tech-c: KB1970-RIPE tech-c: TS4357-RIPE tech-c: RW2586-RIPE tech-c: MS48010-RIPE tech-c: ER311-RIPE nic-hdl: AN1555-RIPE mnt-by: ACONET-LIR-MNT created: 2004-12-16T12,15,52Z last-modified: 2016-09-02T06,43,49Z source: RIPE person: Michael Perzi address: Vienna University address: Computer Center - ACOnet address: Universitaetsstrasse 7 address: A-1010 Vienna address: Austria phone: +43 1 4277 140 83 fax-no: +43 1 4277 9140 e-mail: Michael.Perzi@UniVie.ac.at nic-hdl: MP4729-RIPE remarks: GPG-Key, PGPKEY-23177896 # used for DB transactions mnt-by: ACONET-LIR-MNT created: 2004-02-25T14,07,18Z last-modified: 2006-07-24T10,50,30Z source: RIPE route6: 2001,628,,/29 descr: ACOnet, Provider Local Registry Block for IPv6 origin: AS1853 mnt-by: AS1853-MNT created: 2012-09-26T06,38,41Z last-modified: 2012-09-26T06,38,41Z 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.