inet6num: 2a0a,dc07,,/32 netname: INTERNETGROUP-DATACENTER country: CH admin-c: IGGN1-RIPE tech-c: IGGN1-RIPE status: ASSIGNED mnt-by: ch-internet-mnt created: 2017-02-01T09,42,00Z last-modified: 2017-02-01T09,58,15Z source: RIPE role: Internet Group GmbH NOC address: St. Gallerstrasse 188 address: CH-8404 Winterthur phone: +41 71 777 11 77 abuse-mailbox: email@example.com e-mail: firstname.lastname@example.org nic-hdl: IGGN1-RIPE mnt-by: ch-internet-mnt created: 2017-02-01T09,57,05Z last-modified: 2017-02-01T09,57,05Z source: RIPE route6: 2a0a,dc07,,/32 origin: AS13030 mnt-by: ch-internet-mnt mnt-by: MNT-INIT7-NOC created: 2017-02-13T08,50,19Z last-modified: 2017-02-13T08,50,19Z 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.