inet6num: 2a00,c6e0,,/32 netname: SE-SLI-20130808 country: SE org: ORG-SA1330-RIPE admin-c: SR9794-RIPE tech-c: SR9794-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: SLI-SE-MNT mnt-routes: SLI-SE-MNT mnt-routes: IP-ONLY-MNT notify: email@example.com created: 2013-08-08T07,47,24Z last-modified: 2017-02-17T08,05,33Z source: RIPE organisation: ORG-SA1330-RIPE org-name: SLI AB org-type: LIR address: Box 103 address: 59222 address: Vadstena address: SWEDEN phone: +46143552120 fax-no: +46 e-mail: firstname.lastname@example.org mnt-ref: SLI-SE-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: SLI-SE-MNT admin-c: ML16181-RIPE admin-c: NIHE2-RIPE abuse-c: SR9794-RIPE created: 2013-06-28T08,44,50Z last-modified: 2017-02-17T08,05,34Z source: RIPE role: SLI Registry address: Box 103, 592 22, Vadstena e-mail: email@example.com abuse-mailbox: firstname.lastname@example.org admin-c: ML16181-RIPE tech-c: ML16181-RIPE admin-c: NIHE2-RIPE tech-c: NIHE2-RIPE nic-hdl: SR9794-RIPE mnt-by: SLI-SE-MNT notify: email@example.com created: 2013-08-05T11,59,13Z last-modified: 2014-09-29T07,45,29Z source: RIPE route6: 2a00,c6e0,,/32 descr: IP-ONLY origin: AS12552 mnt-by: IP-ONLY-MNT created: 2014-10-27T15,05,34Z last-modified: 2014-10-27T15,05,34Z 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.