inet6num: 2a00,ff0,9999,,/48 netname: EJOBS-IPV6 country: RO admin-c: GCC1-RIPE tech-c: GCC1-RIPE status: ALLOCATED-BY-LIR mnt-routes: AS12672-MNT mnt-domains: AS12672-MNT mnt-by: ALSYS-MNT created: 2016-11-01T14,12,48Z last-modified: 2016-11-01T14,12,48Z source: RIPE person: Gabriel Claudiu Corcodel address: Alsys Data SRL address: Drumul Sarii 146 Street address: Sector 6, Bucharest address: Romania phone: +40-21-4112626 fax-no: +40-21-4112727 e-mail: email@example.com nic-hdl: GCC1-RIPE notify: firstname.lastname@example.org notify: email@example.com mnt-by: ALSYS-MNT created: 1970-01-01T00,00,00Z last-modified: 2008-05-20T10,59,39Z source: RIPE route6: 2a00,ff0,9999,,/48 descr: EJOBS-IPv6-Route origin: AS12672 mnt-by: ALSYS-MNT mnt-by: AS12672-MNT created: 2016-11-01T14,15,22Z last-modified: 2016-11-01T14,15,22Z 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.