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inet6num: 2a02,1658,,/32 netname: UK-EXONETRIC-UK-20100601 country: GB org: ORG-ECL14-RIPE admin-c: MB5644-RIPE admin-c: EXO1-RIPE admin-c: SUMO tech-c: MB5644-RIPE tech-c: EXO1-RIPE tech-c: SUMO status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12290-MNT mnt-lower: NETSUMO-MNT mnt-lower: AS12290-MNT mnt-routes: NETSUMO-MNT mnt-routes: AS12290-MNT notify: email@example.com mnt-domains: AS12290-MNT created: 2010-06-01T12,19,13Z last-modified: 2017-01-26T21,07,05Z source: RIPE organisation: ORG-ECL14-RIPE org-name: Exonetric Consulting Ltd org-type: LIR address: Unit 57, Surrey Technology Centre, 40 Occam Road address: Guildford address: GU2 7TG address: UNITED KINGDOM phone: +441483682682 fax-no: +441483573704 e-mail: firstname.lastname@example.org abuse-c: AR17641-RIPE mnt-ref: NETSUMO-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-ref: AS12290-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12290-MNT admin-c: ML7335-RIPE admin-c: MB5644-RIPE created: 2010-05-27T13,51,41Z last-modified: 2017-01-26T21,07,06Z source: RIPE role: Exonetric Hostmaster address: Exonetric address: Unit 57, Surrey Technology Centre address: 40 Occam Road, The Surrey Research Park address: Guildford address: GU2 7YG address: UK phone: +44 (0)7766 918662 e-mail: email@example.com admin-c: MB5644-RIPE tech-c: MB5644-RIPE nic-hdl: EXO1-RIPE remarks: Hostmaster remarks: **** remarks: * All abuse reports to firstname.lastname@example.org remarks: **** notify: email@example.com mnt-by: AS12290-MNT created: 2003-11-24T16,35,48Z last-modified: 2010-06-15T11,38,06Z source: RIPE role: NetSumo Limited Operators address: NetSumo Ltd address: 31 Beaufort Court address: Admirals Way address: London address: E14 9XL address: United Kingdom phone: +44 207 993 1701 fax-no: +44 207 993 1709 e-mail: firstname.lastname@example.org org: ORG-SUMO1-RIPE admin-c: CRUZ # Alex Cruz Farmer tech-c: CRUZ # Alex Cruz Farmer nic-hdl: SUMO remarks: NetSumo Consultants notify: email@example.com mnt-by: NETSUMO-MNT created: 2005-01-11T17,28,25Z last-modified: 2014-04-17T11,12,56Z source: RIPE person: Mark Blackman address: Exonetric address: Unit 57, Surrey Technology Centre address: 40 Occam Road, The Surrey Research Park address: GU2 7YG address: Guildford address: UK phone: +44 7766 918662 e-mail: firstname.lastname@example.org nic-hdl: MB5644-RIPE mnt-by: AS12290-MNT created: 2003-10-05T14,28,52Z last-modified: 2010-06-15T12,26,11Z source: RIPE route6: 2a02,1658,,/32 descr: Exonetric Consulting Ltd origin: AS12290 mnt-by: NETSUMO-MNT mnt-by: AS12290-MNT created: 2012-02-08T11,43,48Z last-modified: 2012-02-08T11,43,48Z 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.