inet6num: 2a03,7e0,,/32 netname: NL-WHITELABELHOSTING-20140703 country: NL org: ORG-TIGB1-RIPE admin-c: TIGN1-RIPE tech-c: TIGN1-RIPE status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: tripleitgroup mnt-lower: tripleitgroup mnt-lower: BIT-MNT mnt-routes: LEASEWEB-MNT mnt-routes: BIT-MNT mnt-domains: tripleitgroup created: 2014-07-03T14,03,40Z last-modified: 2016-06-14T13,06,13Z source: RIPE organisation: ORG-TIGB1-RIPE org-name: Triple IT Group B.V. org-type: LIR address: Ringbaan Zuid 10 address: 6905DB address: Zevenaar address: NETHERLANDS phone: +310316762701 e-mail: email@example.com abuse-c: AC28350-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: tripleitgroup abuse-mailbox: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: tripleitgroup created: 2014-06-26T13,28,05Z last-modified: 2016-06-09T16,01,00Z source: RIPE role: Triple IT Group Network department address: Ringbaan Zuid 10 e-mail: email@example.com admin-c: CV3687-RIPE tech-c: CV3687-RIPE abuse-mailbox: firstname.lastname@example.org nic-hdl: TIGN1-RIPE mnt-by: tripleitgroup created: 2014-06-27T12,08,32Z last-modified: 2015-10-16T13,46,42Z source: RIPE route6: 2a03,7e0,,/32 descr: Hosted.nl B.V. origin: AS12859 notify: email@example.com mnt-by: BIT-MNT created: 2016-06-14T12,39,38Z last-modified: 2016-06-14T12,39,38Z source: RIPE route6: 2a03,7e0,,/32 descr: routed via LeaseWeb NL origin: AS60781 mnt-by: LEASEWEB-NL-MNT created: 2015-07-31T15,10,18Z last-modified: 2015-09-30T11,39,40Z 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.