inet6num: 2001,67c,2648,,/48 netname: CH-OPENFACTORY-OFFICE country: CH org: ORG-OG36-RIPE admin-c: DOG-RIPE tech-c: DOG-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: MNT-INIT7-NOC mnt-by: SG65517-MNT created: 2015-11-10T14,14,05Z last-modified: 2016-04-14T09,01,42Z source: RIPE organisation: ORG-OG36-RIPE org-name: Openfactory GmbH org-type: LIR address: Moosweg 25 address: 8500 address: Frauenfeld address: SWITZERLAND phone: +41525669500 fax-no: +41527203988 e-mail: firstname.lastname@example.org admin-c: DOG-RIPE abuse-c: AR14350-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: SG65517-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: SG65517-MNT created: 2011-12-22T10,56,03Z last-modified: 2016-06-18T22,58,34Z source: RIPE person: Silvan Michael Gebhardt address: Moosweg 25 address: 8500 Frauenfeld e-mail: email@example.com phone: +41 52 566 95 01 nic-hdl: DOG-RIPE created: 2008-05-06T12,14,55Z last-modified: 2015-02-02T19,28,43Z source: RIPE mnt-by: SG65517-MNT route6: 2001,67c,2648,,/48 descr: Openfactory GmbH origin: AS13030 mnt-by: MNT-INIT7-NOC created: 2015-12-17T15,02,45Z last-modified: 2015-12-17T15,02,45Z 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.