inet6num: 2a00,1890,,/29 netname: DE-VIKINGS-20091216 country: DE org: ORG-VG61-RIPE admin-c: VKGS-RIPE tech-c: VKGS-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-VIKINGS mnt-routes: MNT-VIKINGS mnt-domains: MNT-VIKINGS created: 2014-10-17T12,51,39Z last-modified: 2017-07-19T17,45,41Z source: RIPE organisation: ORG-VG61-RIPE org-name: Vikings GmbH org-type: LIR address: Mergenthalerallee 10-12 address: 65760 address: Eschborn address: GERMANY e-mail: email@example.com admin-c: VKGS-RIPE tech-c: VKGS-RIPE abuse-c: VKGS-RIPE mnt-ref: MNT-VIKINGS mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-VIKINGS created: 2017-04-13T07,30,20Z last-modified: 2017-07-19T17,46,02Z source: RIPE phone: +496196202820 fax-no: +4961962028299 role: Vikings Network Operations address: Vikings GmbH address: Mergenthalerallee 10-12 address: 65760 Eschborn address: Germany e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com admin-c: THUM-RIPE tech-c: THUM-RIPE nic-hdl: VKGS-RIPE mnt-by: MNT-VIKINGS created: 2017-07-16T21,43,16Z last-modified: 2017-07-16T21,49,15Z source: RIPE remarks: One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them In the Land of Mordor where the Shadows lie. route6: 2a00,1890,,/29 descr: Vikings GmbH origin: AS12586 mnt-by: GHOSTNET-MNT created: 2014-10-20T10,26,22Z last-modified: 2017-07-16T22,28,10Z 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.