inet6num: 2a00,6440,,/32 netname: BY-BN-20111223 country: BY org: ORG-BNJ1-RIPE admin-c: PG3578-RIPE tech-c: JAM29-RIPE status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12406-MNT created: 2011-12-23T11,43,37Z last-modified: 2016-06-28T05,51,46Z source: RIPE organisation: ORG-BNJ1-RIPE org-name: Business Network Ltd org-type: LIR address: K. Tsetkin str, 51, 601 address: 220004 address: Minsk address: BELARUS phone: +375 17 2030101 fax-no: +375 17 3063131 e-mail: email@example.com admin-c: DSH7-RIPE admin-c: AT13276-RIPE admin-c: VB5730-RIPE admin-c: AG19018-RIPE abuse-c: AR14253-RIPE ref-nfy: firstname.lastname@example.org mnt-ref: RIPE-NCC-HM-MNT mnt-ref: AS12406-MNT notify: email@example.com abuse-mailbox: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12406-MNT created: 2004-04-17T11,01,35Z last-modified: 2016-07-19T11,00,42Z source: RIPE person: Andrew Minich address: 220004, st. K.Tsetkin, 51 - 601 address: Belarus, Minsk phone: +375 17 2030101 fax-no: +375 17 3063131 e-mail: email@example.com nic-hdl: JAM29-RIPE mnt-by: AS12406-MNT mnt-by: BNBY-MNT notify: firstname.lastname@example.org created: 2002-01-10T11,21,01Z last-modified: 2016-06-28T08,59,37Z source: RIPE person: Pavel Gonchar address: 220004, st. K.Tsetkin, 51 - 601 address: Belarus, Minsk phone: +375 17 2030101 fax-no: +375 17 3063131 e-mail: email@example.com nic-hdl: PG3578-RIPE mnt-by: AS12406-MNT created: 2005-12-07T08,36,35Z last-modified: 2015-04-06T13,18,36Z source: RIPE route6: 2a00,6440,,/32 descr: BUSINESS NETWORK origin: AS12406 mnt-by: AS12406-MNT notify: firstname.lastname@example.org created: 2013-12-04T11,37,14Z last-modified: 2013-12-04T11,37,14Z 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.