inet6num: 2001,67c,2764,,/48 netname: VPS-NO country: NO org: ORG-VPS3-RIPE admin-c: VPS-RIPE tech-c: VPS-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: VPS-MNT mnt-routes: VPS-MNT mnt-routes: IP-ONLY-MNT mnt-domains: VPS-MNT notify: email@example.com created: 2012-03-08T12,39,37Z last-modified: 2016-04-14T08,46,16Z source: RIPE sponsoring-org: ORG-ITCA1-RIPE organisation: ORG-VPS3-RIPE org-name: Verdipapirsentralen ASA org-type: OTHER address: Biskop Gunnerus Gate 14A address: N-0051 Oslo address: Norway admin-c: VPS-RIPE tech-c: VPS-RIPE e-mail: firstname.lastname@example.org mnt-ref: VPS-MNT mnt-by: VPS-MNT created: 2012-02-27T13,49,01Z last-modified: 2014-03-27T17,15,25Z source: RIPE abuse-c: VPS-RIPE role: Verdipapirsentralen NOC address: Biskop Gunnerus Gate 14A address: N-0051 Oslo address: Norway e-mail: email@example.com abuse-mailbox: firstname.lastname@example.org admin-c: MCE-RIPE admin-c: FKV-RIPE tech-c: MCE-RIPE tech-c: FKV-RIPE nic-hdl: VPS-RIPE mnt-by: VPS-MNT created: 2010-12-10T11,27,19Z last-modified: 2010-12-10T11,35,53Z source: RIPE route6: 2001,67c,2764,,/48 descr: Verdipapirsentralen ASA origin: AS12552 mnt-by: IP-ONLY-MNT created: 2013-10-22T11,41,26Z last-modified: 2013-10-22T11,41,26Z 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.