inet6num: 2001,67c,18e8,,/48 netname: BYTEMINE-NET-V6 country: DE org: ORG-BFK3-RIPE admin-c: FKR-RIPE tech-c: FKR-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: MNT-BYTEMINE mnt-routes: MNT-BYTEMINE mnt-domains: MNT-BYTEMINE notify: firstname.lastname@example.org created: 2013-11-22T11,14,09Z last-modified: 2016-04-14T09,52,13Z source: RIPE sponsoring-org: ORG-GG3-RIPE organisation: ORG-BFK3-RIPE org-name: bytemine GmbH org-type: OTHER address: Im Technologiepark 4 address: 26129 Oldenburg e-mail: email@example.com abuse-c: AR22247-RIPE mnt-ref: MNT-BYTEMINE mnt-by: MNT-BYTEMINE created: 2009-03-02T16,47,54Z last-modified: 2014-11-26T13,15,13Z source: RIPE person: Felix Kronlage address: bytemine GmbH address: Im Technologiepark 4 address: D-26129 Oldenburg address: Germany phone: +49 172 1717311 phone: +49 441 3091971 e-mail: firstname.lastname@example.org nic-hdl: FKR-RIPE mnt-by: MNT-BYTEMINE created: 1970-01-01T00,00,00Z last-modified: 2014-11-26T13,14,16Z source: RIPE route6: 2001,67c,18e8,,/48 descr: bytemine Route v6 origin: AS48991 mnt-by: MNT-BYTEMINE created: 2014-02-17T14,45,31Z last-modified: 2014-02-17T14,45,31Z 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.