inet6num: 2a07,50c0,,/29 netname: SM-ITTWEB-20160408 country: IT org: ORG-IS346-RIPE admin-c: MM43850-RIPE tech-c: MM43850-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: sm-ittweb-1-mnt mnt-lower: sm-ittweb-1-mnt mnt-routes: SEEWEB-MNT created: 2016-04-08T11,56,08Z last-modified: 2016-05-20T11,39,51Z source: RIPE organisation: ORG-IS346-RIPE org-name: IT&T SRL org-type: LIR address: Strada degli Angariari, 25 address: 47891 address: Rovereta address: SAN MARINO phone: +3780549941183 fax-no: +3780549974280 e-mail: firstname.lastname@example.org admin-c: MM43850-RIPE tech-c: MM43850-RIPE abuse-c: AR35946-RIPE mnt-ref: sm-ittweb-1-mnt mnt-by: RIPE-NCC-HM-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: sm-ittweb-1-mnt created: 2016-04-04T10,02,45Z last-modified: 2016-06-14T07,49,05Z source: RIPE person: Marco Macari address: Strada degli Angariari, 25 address: 47891 address: Rovereta address: SAN MARINO phone: +3780549941183 nic-hdl: MM43850-RIPE mnt-by: sm-ittweb-1-mnt created: 2016-04-04T10,02,44Z last-modified: 2016-04-04T10,02,45Z source: RIPE route6: 2a07,50c0,,/29 descr: IT&T SRL origin: AS12637 mnt-by: SEEWEB-MNT created: 2016-05-20T14,23,29Z last-modified: 2016-05-20T14,23,29Z 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.