inet6num: 2a00,f38,,/32 netname: AM-ARMENTEL-20081127 country: AM org: ORG-ATCh1-RIPE admin-c: AA5090-RIPE tech-c: AA5090-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: ARMENTEL-MNT mnt-routes: ARMENTEL-MNT notify: email@example.com created: 2008-11-27T13,19,31Z last-modified: 2016-09-22T11,29,36Z source: RIPE organisation: ORG-ATCh1-RIPE org-name: "ArmenTel" CJSC org-type: LIR address: 2 Aharonian street address: 0014 address: Yerevan address: ARMENIA phone: +37410289787 fax-no: +37410289770 abuse-c: AR14046-RIPE admin-c: AA5090-RIPE admin-c: AH5263-RIPE mnt-ref: ARMENTEL-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: ARMENTEL-MNT created: 2004-04-17T10,58,03Z last-modified: 2016-09-22T11,29,50Z source: RIPE e-mail: firstname.lastname@example.org person: Arthur Adunts address: 24/1 Azatoutyan Ave. address: Yerevan 375014 address: Republic of Armenia phone: +374 10 2898 e-mail: email@example.com nic-hdl: AA5090-RIPE notify: firstname.lastname@example.org mnt-by: ARMENTEL-MNT created: 2006-02-01T07,51,01Z last-modified: 2008-10-27T06,56,45Z source: RIPE route6: 2a00,f38,,/32 descr: ARMENTEL-IPV6-NET origin: AS12297 mnt-by: ARMENTEL-MNT notify: email@example.com created: 2011-12-20T12,31,57Z last-modified: 2011-12-20T12,31,57Z 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.