inet6num: 2001,67c,684,,/48 netname: KONSEC-NET01-V6 country: DE org: ORG-KG36-RIPE admin-c: AM35496-RIPE tech-c: UN5 status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: NEPUSTIL-NET-MNT mnt-routes: NEPUSTIL-NET-MNT mnt-domains: NEPUSTIL-NET-MNT created: 2014-07-09T11,52,31Z last-modified: 2016-04-14T08,31,46Z source: RIPE sponsoring-org: ORG-DNCG1-RIPE organisation: ORG-KG36-RIPE org-name: KONSEC GmbH org-type: OTHER address: KONSEC GmbH Leitzstraße 45 70469 Stuttgart Germany phone: +49 711 49066 280 fax-no: +49 711 49066 285 e-mail: email@example.com abuse-c: AC29733-RIPE admin-c: AM35496-RIPE tech-c: UN5 ref-nfy: firstname.lastname@example.org mnt-ref: NEPUSTIL-NET-MNT mnt-by: NEPUSTIL-NET-MNT created: 2014-07-03T13,36,17Z last-modified: 2016-02-15T16,42,18Z source: RIPE person: Andreas Mack address: KONSEC GmbH address: Leitzstrasse 45 address: D-70469 Stuttgart e-mail: email@example.com mnt-by: NEPUSTIL-NET-MNT phone: +49-711-49066-280 fax-no: +49-711-49066-285 nic-hdl: AM35496-RIPE created: 2014-07-03T13,33,57Z last-modified: 2014-07-03T13,33,57Z source: RIPE person: Ulrich Nepustil address: Dr.-Ing. Nepustil & Co. GmbH address: Rathausstr. 3 address: D-72658 Bempflingen address: Germany phone: +49 7123 93006-0 fax-no: +49 7123 93006-99 e-mail: firstname.lastname@example.org nic-hdl: UN5 mnt-by: NEPUSTIL-NET-MNT created: 1970-01-01T00,00,00Z last-modified: 2012-05-25T20,44,16Z source: RIPE route6: 2001,67c,684,,/48 descr: KONSEC GmbH IPv6 origin: AS12502 mnt-by: NEPUSTIL-NET-MNT created: 2014-07-09T12,11,48Z last-modified: 2014-07-09T12,11,48Z 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.