inet6num: 2001,4c78,,/32 netname: CH-VTX-20050513 country: CH org: ORG-VA3-RIPE admin-c: VTX-RIPE tech-c: VTX-RIPE status: ALLOCATED-BY-RIR remarks: VTX IPv6 Network notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: VTX-MNT mnt-lower: VTX-MNT mnt-routes: VTX-MNT created: 2005-05-13T11,00,01Z last-modified: 2016-09-02T12,58,02Z source: RIPE organisation: ORG-VA3-RIPE org-name: VTX Services SA org-type: LIR address: Avenue de Lavaux 101 address: 1009 address: Pully address: SWITZERLAND phone: +41 21 721 11 11 fax-no: +41 21 721 11 12 e-mail: email@example.com admin-c: FC6857-RIPE admin-c: MC1375-RIPE admin-c: FC1128-RIPE admin-c: RC64-RIPE admin-c: BW791-RIPE abuse-c: AC24017-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: VTX-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: VTX-MNT created: 2004-04-17T11,03,38Z last-modified: 2016-09-02T12,58,29Z source: RIPE role: VTX Services SA address: Av. de Lavaux 101 address: CH-1009 Pully phone: +41 21 721 1111 fax-no: +41 21 721 1112 e-mail: firstname.lastname@example.org org: ORG-VA3-RIPE abuse-mailbox: email@example.com remarks: ========================================================== remarks: Spam and abuse issues , firstname.lastname@example.org remarks: ---------------------------------------------------------- remarks: If you think we try to hack or spam you, remarks: please read this , http,//www.ripe.net/nicdb.html remarks: ========================================================== admin-c: FC1128-RIPE admin-c: ED147-RIPE tech-c: RC64-RIPE tech-c: MC1375-RIPE tech-c: BW791-RIPE tech-c: FC6857-RIPE nic-hdl: VTX-RIPE mnt-by: VTX-MNT created: 2002-02-05T13,06,20Z last-modified: 2014-07-25T13,52,40Z source: RIPE route6: 2001,4c78,,/32 descr: CH.VTX LIR Range origin: AS12350 notify: email@example.com mnt-by: VTX-MNT remarks: since 20081120 created: 2008-11-20T12,11,24Z last-modified: 2008-11-20T12,11,24Z 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.