inet6num: 2001,67c,43c,,/48 netname: XITE-SE country: SE org: ORG-XCA2-RIPE admin-c: XCA1-RIPE tech-c: XCA1-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: MNT-1O mnt-routes: MNT-1O mnt-domains: MNT-1O notify: firstname.lastname@example.org created: 2014-02-14T14,42,54Z last-modified: 2016-04-14T08,28,12Z source: RIPE organisation: ORG-XCA2-RIPE org-name: Xite Consulting AB org-type: LIR address: S,t Persgatan 6 address: 75320 address: Uppsala address: SWEDEN e-mail: email@example.com admin-c: DT7598-RIPE tech-c: DT7598-RIPE abuse-c: AR35558-RIPE mnt-ref: MNT-1O mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-1O mnt-ref: RIPE-NCC-HM-MNT created: 2016-03-01T08,21,08Z last-modified: 2016-11-07T20,27,49Z source: RIPE phone: +460187512000 role: Xite Consulting AB address: Svartbäcksgatan 8 address: 753 20 UPPSALA address: Sweden e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com admin-c: DT2836-RIPE tech-c: DT2836-RIPE nic-hdl: XCA1-RIPE mnt-by: BLIXTVIK-MNT created: 2008-08-29T07,57,24Z last-modified: 2008-08-29T07,57,24Z source: RIPE route6: 2001,67c,43c,,/48 descr: AS12552 mnt-routes: MNT-1O origin: AS12552 mnt-by: IP-ONLY-MNT created: 2014-03-11T15,08,42Z last-modified: 2016-03-08T14,43,47Z 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.