inet6num: 2001,1a70,,/29 netname: MT-CSC-20040223 country: MT org: ORG-CSCU1-RIPE admin-c: ROB3-RIPE tech-c: DAVE1-RIPE tech-c: NOEL1-RIPE notify: firstname.lastname@example.org status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: MIF-MNT mnt-lower: COMPU-MNT mnt-lower: MIF-MNT mnt-routes: COMPU-MNT created: 2017-09-25T06,32,03Z last-modified: 2017-09-25T06,32,03Z source: RIPE organisation: ORG-CSCU1-RIPE org-name: Malta Internet Foundation org-type: LIR address: University Campus address: MSD 2080 address: Msida address: MALTA phone: +356 23404100 e-mail: email@example.com abuse-c: AR16120-RIPE admin-c: DAVE1-RIPE admin-c: ROB3-RIPE mnt-ref: MNT-UOM mnt-ref: MIF-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: MIF-MNT created: 2004-04-17T11,39,11Z last-modified: 2017-08-09T09,47,51Z source: RIPE person: David Mifsud address: University of Malta address: IT Services address: Msida, MSD 2080, Malta phone: +356 2340 4100 e-mail: firstname.lastname@example.org nic-hdl: DAVE1-RIPE mnt-by: COMPU-MNT created: 2002-06-05T06,24,51Z last-modified: 2013-09-09T08,01,34Z source: RIPE person: Noel de Gabriele address: University of Malta address: Computing Services Centre address: Msida, MSD 06, Malta phone: +356 2340 3004 phone: +356 2340 3005 fax-no: +356 21 343 397 e-mail: email@example.com nic-hdl: NOEL1-RIPE notify: firstname.lastname@example.org mnt-by: COMPU-MNT created: 2003-12-16T12,10,55Z last-modified: 2003-12-16T12,10,55Z source: RIPE person: Robert Sultana address: University of Malta address: IT Services address: Msida, MSD 2080, Malta phone: +356 2340 4100 e-mail: email@example.com nic-hdl: ROB3-RIPE notify: firstname.lastname@example.org mnt-by: COMPU-MNT created: 2002-06-05T06,24,49Z last-modified: 2013-09-09T08,01,34Z 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.