inet6num: 2a02,6f60,,/32 netname: DK-BLUEPIPE-20140604 country: DK org: ORG-BA630-RIPE admin-c: PR5619-RIPE tech-c: PR5619-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-lower: MNT-BLUEPIPE mnt-routes: MNT-BLUEPIPE mnt-routes: MNT-SOLIDO notify: firstname.lastname@example.org created: 2014-06-04T10,37,33Z last-modified: 2016-04-14T10,19,46Z source: RIPE organisation: ORG-BA630-RIPE org-name: bluepipe a/s org-type: LIR address: Frederiksberggade 28 address: 1459 address: Copenhagen address: DENMARK phone: +4570210050 e-mail: email@example.com abuse-c: AC28819-RIPE mnt-ref: MNT-BLUEPIPE mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT created: 2014-01-13T17,13,46Z last-modified: 2016-02-15T15,55,07Z source: RIPE person: Phil Regnauld address: bluepipe A/S address: Frederiksberggade 28, 3.tv. address: DK-1459 Koebenhavn K address: Denmark phone: +45 70210050 e-mail: firstname.lastname@example.org nic-hdl: PR5619-RIPE mnt-by: MNT-FTFNET created: 2010-05-31T08,21,43Z last-modified: 2010-05-31T08,21,43Z source: RIPE route6: 2a02,6f60,,/32 descr: bluepipe a/s origin: AS12617 mnt-by: MNT-SOLIDO created: 2014-06-22T12,48,43Z last-modified: 2014-06-22T12,48,43Z 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.