inet6num: 2001,be8,2500,,/48 netname: DALADATORER-NET descr: DALADATORER AB country: SE admin-c: MM4679-RIPE tech-c: MM4679-RIPE status: ASSIGNED mnt-by: LIDNET-LIR created: 2017-03-17T08,23,07Z last-modified: 2017-03-17T08,23,07Z source: RIPE person: Max Matslofva address: DALADATORER AB address: Box 297 address: SE-792 25 MORA e-mail: email@example.com phone: +46 250 593890 fax-no: +46 250 18020 mnt-by: LIDNET-LIR notify: firstname.lastname@example.org nic-hdl: MM4679-RIPE created: 2003-03-10T13,16,38Z last-modified: 2010-05-20T07,38,47Z source: RIPE route6: 2001,be8,,/32 descr: LIDERO-BLK descr: descr: descr: descr: In case of improper use originating from our network, descr: please mail customer or descr: descr: descr: origin: AS13189 mnt-by: LIDNET-LIR created: 2009-03-06T07,07,55Z last-modified: 2009-03-06T07,07,55Z 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.