inet6num: 2a02,410,,/32 netname: CH-VIRTUALTEC-20080527 country: CH org: ORG-VSA15-RIPE admin-c: MW77-RIPE tech-c: HAW-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-VIRTUALTEC mnt-routes: MNT-VIRTUALTEC mnt-domains: MNT-VIRTUALTEC notify: email@example.com created: 2008-05-27T12,54,08Z last-modified: 2016-11-01T13,44,56Z source: RIPE organisation: ORG-VSA15-RIPE org-name: Virtualtec Solutions AG org-type: LIR address: Badenerstrasse 808 Postfach 1061 address: 8048 address: Zuerich address: SWITZERLAND phone: +41433363322 fax-no: +41433363320 e-mail: firstname.lastname@example.org admin-c: HAW-RIPE admin-c: MW77-RIPE abuse-mailbox: email@example.com mnt-ref: MNT-VIRTUALTEC mnt-ref: RIPE-NCC-HM-MNT mnt-ref: ATRILA-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-VIRTUALTEC abuse-c: VT2590-RIPE created: 2008-03-17T10,07,03Z last-modified: 2016-11-01T13,45,04Z source: RIPE person: Hannes Widmer address: VirtualTec Solutions AG address: Breitensteinstr. 96 address: Postfach 664 address: CH-8037 Zuerich phone: +41 44 440-0533 fax-no: +41 44 440-0532 e-mail: firstname.lastname@example.org nic-hdl: HAW-RIPE mnt-by: MNT-VIRTUALTEC notify: email@example.com created: 2003-03-05T17,35,01Z last-modified: 2008-05-22T14,32,22Z source: RIPE person: Markus Wild address: VirtualTec Solutions AG address: Badenerstrasse 808 address: Postfach 1061 address: CH-8048 Zuerich phone: +41 43 336-3322 fax-no: +41 43 336-3320 e-mail: firstname.lastname@example.org nic-hdl: MW77-RIPE mnt-by: MNT-DUDES mnt-by: MNT-VIRTUALTEC created: 2002-07-04T14,18,09Z last-modified: 2016-11-01T13,42,44Z source: RIPE route6: 2a02,410,,/32 descr: VirtualTec Solutions AG origin: AS12347 mnt-by: MNT-VIRTUALTEC created: 2008-08-19T11,55,39Z last-modified: 2008-08-19T11,55,39Z 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.