inet6num: 2a00,7440,,/29 netname: DE-DBAG-20120112 country: DE org: ORG-DBA18-RIPE admin-c: DBAG1-RIPE tech-c: DBAG1-RIPE status: ALLOCATED-BY-RIR remarks: Eschborn notify: firstname.lastname@example.org notify: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: DBAG-MNT mnt-lower: DBAG-MNT mnt-routes: DBAG-MNT mnt-domains: DBAG-MNT created: 2013-08-30T12,22,55Z last-modified: 2016-07-29T07,14,52Z source: RIPE organisation: ORG-DBA18-RIPE org-name: Deutsche Boerse AG org-type: LIR address: Mergenthalerallee 61 address: 65760 address: Eschborn address: GERMANY phone: +496921117300 fax-no: +4969211617300 e-mail: firstname.lastname@example.org admin-c: PEUC1-RIPE admin-c: BK2609-RIPE tech-c: DBAG1-RIPE abuse-c: DBAG2-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: DBAG-MNT notify: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: DBAG-MNT created: 2011-11-07T12,07,31Z last-modified: 2016-07-29T07,14,50Z source: RIPE role: Deutsche Boerse AG NOS CCI Team address: Deutsche Boerse AG address: Mergenthalerallee 61 address: D-65760 Eschborn address: Germany org: ORG-DBA18-RIPE e-mail: firstname.lastname@example.org admin-c: PEUC1-RIPE admin-c: BK2609-RIPE tech-c: PEUC1-RIPE tech-c: BK2609-RIPE nic-hdl: DBAG1-RIPE mnt-by: DBAG-MNT notify: email@example.com created: 2012-01-27T07,41,18Z last-modified: 2015-09-07T07,29,51Z 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.