inet6num: 2001,67c,2e20,,/48 netname: NL-OPENPEERING-20160826 country: NL org: ORG-GAME1-RIPE sponsoring-org: ORG-SPB2-RIPE admin-c: Gr3451-RIPE admin-c: Gr3451-RIPE tech-c: Gr3451-RIPE status: ASSIGNED PI mnt-by: ATOM86-MNT mnt-routes: ATOM86-MNT mnt-by: RIPE-NCC-END-MNT created: 2016-08-26T13,06,15Z last-modified: 2017-10-12T11,58,44Z source: RIPE organisation: ORG-GAME1-RIPE org-name: Gamepoint B.V. org-type: OTHER address: Gevers Deynootweg 93G address: 2586BK Den Haag address: The Netherlands phone: +31 (0)70 3110110 fax-no: +31 (0)70 3110111 e-mail: email@example.com abuse-c: AR28038-RIPE mnt-ref: OPENPEERING-MNT mnt-by: OPENPEERING-MNT created: 2005-02-21T22,34,56Z last-modified: 2014-11-18T09,32,25Z source: RIPE role: Gamepoint role address: Gamepoint B.V. address: Gevers Deynootweg 93G address: 2586BK Den Haag address: The Netherlands e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com admin-c: AE4870-RIPE tech-c: AE4870-RIPE nic-hdl: Gr3451-RIPE mnt-by: OPENPEERING-MNT created: 2008-05-14T12,12,45Z last-modified: 2016-08-26T12,17,21Z source: RIPE route6: 2001,67c,2e20,,/48 origin: AS12945 descr: Gamepoint mnt-by: OPENPEERING-MNT created: 2016-08-29T08,36,36Z last-modified: 2016-08-29T08,36,48Z 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.