inet6num: 2a02,968,,/32 netname: NL-HOBBYNET-20090130 country: NL org: ORG-HH1-RIPE admin-c: HNET2-RIPE tech-c: HNET2-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: HOBBYNET-RIPE-MNT mnt-routes: HOBBYNET-RIPE-MNT mnt-routes: BIT-MNT mnt-domains: HOBBYNET-RIPE-MNT notify: firstname.lastname@example.org created: 2009-01-30T14,31,49Z last-modified: 2017-11-03T11,21,02Z source: RIPE organisation: ORG-HH1-RIPE org-name: HCC org-type: LIR address: Kenaupark 23 address: 2011 MR address: Haarlem address: NETHERLANDS phone: +31652384841 fax-no: +31237514001 e-mail: email@example.com admin-c: bfvd1-ripe admin-c: hans8-RIPE admin-c: egbe1-ripe mnt-ref: HOBBYNET-RIPE-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: HOBBYNET-RIPE-MNT abuse-c: HNET2-RIPE created: 2004-04-17T11,41,17Z last-modified: 2017-11-03T11,21,03Z source: RIPE role: HCC Hobbynet Hostmaster address: Jansweg 38 address: NL-2011 KN HAARLEM address: The NETHERLANDS phone: +31 6 523 84 84 1 e-mail: firstname.lastname@example.org remarks: trouble, +31 6 523 84 84 1 remarks: trouble, Abuse reports to email@example.com admin-c: bfvd1-ripe admin-c: hans8-RIPE tech-c: bfvd1-ripe tech-c: hans8-RIPE abuse-mailbox: ABUSE@HOBBY.NL notify: firstname.lastname@example.org mnt-by: HOBBYNET-RIPE-MNT created: 1970-01-01T00,00,00Z last-modified: 2013-06-06T05,42,24Z source: RIPE nic-hdl: HNET2-RIPE route6: 2a02,968,,/32 descr: NL-HOBBYNET-20090205 descr: HCC Hobbynet origin: AS12859 notify: email@example.com mnt-by: BIT-MNT created: 2009-02-05T12,42,09Z last-modified: 2009-02-05T12,42,09Z 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.