inet6num: 2a00,1278,,/32 netname: DE-WORNET-20090819 country: DE org: ORG-WA5-RIPE admin-c: WDA3-RIPE tech-c: CE27-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: WORNET-MNT mnt-routes: WORNET-MNT notify: firstname.lastname@example.org created: 2009-08-19T09,25,49Z last-modified: 2017-03-02T08,42,57Z source: RIPE organisation: ORG-WA5-RIPE org-name: WorNet AG org-type: LIR address: Buergermeister-Graf-Ring 28 address: 82538 address: Geretsried-Gelting address: GERMANY phone: +49 8171 246910 fax-no: +49 8171 2469199 e-mail: email@example.com mnt-ref: WORNET-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: WORNET-MNT admin-c: CE27-RIPE admin-c: WNOC-RIPE abuse-c: WNOC-RIPE created: 2004-04-17T11,13,49Z last-modified: 2017-03-02T08,42,58Z source: RIPE person: Christian Eich address: WorNet AG address: Buergermeister-Graf-Ring 28 address: 82538 Geretsried address: Germany phone: +49 8171 2469111 e-mail: firstname.lastname@example.org nic-hdl: CE27-RIPE mnt-by: WORNET-MNT created: 1970-01-01T00,00,00Z last-modified: 2017-03-02T08,50,25Z source: RIPE person: WorNet Domain Administrator address: Buergermeister-Graf-Ring 28 address: D-82538 Geretsried address: Germany phone: +49 8171 246910 fax-no: +49 8171 2469199 e-mail: email@example.com nic-hdl: WDA3-RIPE mnt-by: WORNET-MNT created: 1970-01-01T00,00,00Z last-modified: 2017-03-02T10,04,50Z source: RIPE route6: 2a00,1278,,/32 descr: WORNET origin: AS12813 mnt-by: WORNET-MNT created: 2011-03-21T04,12,37Z last-modified: 2011-03-21T04,12,37Z 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.