inet6num: 2a00,e020,,/32 netname: CH-ARONET-20130912 country: CH org: ORG-AG103-RIPE admin-c: IT2140-RIPE tech-c: IT2140-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: RA69912-MNT mnt-routes: RA69912-MNT notify: firstname.lastname@example.org created: 2013-09-12T12,37,50Z last-modified: 2017-02-28T17,34,07Z source: RIPE organisation: ORG-AG103-RIPE org-name: ARONET GmbH org-type: LIR address: Menznauerstr. 6 address: 6130 address: Willisau address: SWITZERLAND phone: +41419726222 fax-no: +41419726221 e-mail: Office@aronet.ch admin-c: RA6877-RIPE abuse-c: AG16734-RIPE mnt-ref: RA69912-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: RA69912-MNT created: 2013-09-04T11,22,17Z last-modified: 2017-02-28T17,34,09Z source: RIPE role: IT Team address: ARONET GmbH, Menznauerstr. 6, 6130 Willisau e-mail: email@example.com admin-c: RA6877-RIPE tech-c: RA6877-RIPE nic-hdl: IT2140-RIPE mnt-by: RA69912-MNT created: 2013-09-12T12,19,50Z last-modified: 2013-09-12T12,19,50Z source: RIPE route6: 2a00,e020,,/32 descr: ARONET GmbH origin: AS13030 mnt-by: MNT-INIT7-NOC mnt-by: RA69912-MNT created: 2013-12-09T10,58,22Z last-modified: 2013-12-09T10,58,22Z 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.