inet6num: 2001,67c,1314,,/48 netname: VZP-CR country: CZ org: ORG-VCP1-RIPE admin-c: QT14-RIPE admin-c: PK7962-RIPE tech-c: QT14-RIPE tech-c: PK7962-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: VZP-MNT mnt-by: AS12767-MNT mnt-routes: VZP-MNT mnt-routes: AS12767-MNT mnt-domains: VZP-MNT mnt-domains: AS12767-MNT notify: email@example.com created: 2013-01-25T08,54,58Z last-modified: 2016-04-14T10,25,57Z source: RIPE sponsoring-org: ORG-Ra2-RIPE organisation: ORG-VCP1-RIPE org-name: Vseobecna zdravotni pojistovna Ceske republiky org-type: OTHER address: Orlicka 4 address: Praha 3 address: 130 00 address: Czech Republic phone: +420 731546138 e-mail: firstname.lastname@example.org abuse-c: AR29800-RIPE admin-c: QT14-RIPE admin-c: PK7962-RIPE mnt-ref: VZP-MNT mnt-by: VZP-MNT created: 2007-07-11T12,37,16Z last-modified: 2016-04-01T12,59,08Z source: RIPE person: Petr Kocian address: VZP address: Orlicka 4 address: Prague 3 address: 130 00 address: Czech Republic phone: +420 731546169 e-mail: email@example.com nic-hdl: PK7962-RIPE mnt-by: VZP-MNT created: 2016-04-01T12,45,53Z last-modified: 2016-04-01T12,45,53Z source: RIPE person: Quido Trojan address: VZP address: Orlicka 4 address: Praha 3 address: 130 00 address: Czech Republic phone: +420 731546138 e-mail: firstname.lastname@example.org nic-hdl: QT14-RIPE mnt-by: VZP-MNT created: 2007-06-14T08,53,03Z last-modified: 2007-07-11T12,47,02Z source: RIPE route6: 2001,67c,1314,,/48 descr: VZP origin: AS12767 mnt-by: AS12767-MNT created: 2016-07-13T08,51,17Z last-modified: 2016-07-13T08,51,17Z 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.