inet6num: 2001,67c,26c,,/48 netname: MPSV-NET country: CZ org: ORG-Mola2-RIPE admin-c: JJ1796-RIPE tech-c: PH955-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: AS12767-MNT mnt-routes: AS12767-MNT mnt-domains: AS12767-MNT created: 2010-07-08T10,42,09Z last-modified: 2016-04-14T10,06,45Z source: RIPE sponsoring-org: ORG-Ra2-RIPE organisation: ORG-Mola2-RIPE org-name: Ministry of labour and social affairs org-type: OTHER address: Na poricnim pravu 1/376 address: Praha 1 address: 12801 address: Czech Republic e-mail: email@example.com abuse-c: AR29796-RIPE mnt-ref: AS12767-MNT mnt-by: AS12767-MNT created: 2009-03-19T14,59,29Z last-modified: 2016-03-16T11,50,28Z source: RIPE role: PragoNet Hostmaster address: T-Systems Czech Republic a.s. address: Na Pankraci 1685/19 address: Praha 4 address: 140 21 address: The Czech Republic phone: +420 2 36099111 fax-no: +420 2 36099999 e-mail: firstname.lastname@example.org remarks: trouble, ------------------------------------------ remarks: trouble, Abuse and SPAM, remarks: trouble, IP administration, remarks: trouble, Operational issues, remarks: trouble, 24x7 NOC, remarks: trouble, 24x7 NOC, +420 2 36099777 remarks: trouble, 24x7 NOC, +420 2 72732080 remarks: trouble, ------------------------------------------ admin-c: AD1535-RIPE tech-c: LD3354-RIPE tech-c: ZR502-RIPE tech-c: AD1535-RIPE nic-hdl: PH955-RIPE notify: email@example.com mnt-by: PRAGONET-MNT mnt-by: AS12767-MNT created: 2002-06-11T09,37,46Z last-modified: 2011-11-04T09,24,58Z source: RIPE abuse-mailbox: firstname.lastname@example.org person: Jan Jirsak address: MPSV address: Na Poricnim pravu 1 address: Praha 2 address: 128 01 address: Czech Republic phone: +420 603 231 178 e-mail: email@example.com nic-hdl: JJ1796-RIPE created: 2008-12-04T12,15,16Z last-modified: 2016-04-06T20,38,10Z mnt-by: RIPE-NCC-LOCKED-MNT source: RIPE route6: 2001,67c,26c,,/48 descr: MPSV-NET_AGGREGATE origin: AS12767 mnt-by: AS12767-MNT created: 2010-07-09T08,40,02Z last-modified: 2010-07-09T08,40,02Z source: RIPE route6: 2001,67c,26c,,/48 descr: MPSV-NET_AGGREGATE origin: AS2819 mnt-by: GTSCZ-A-MNT created: 2012-10-25T13,58,52Z last-modified: 2012-10-25T13,58,52Z source: RIPE route6: 2001,67c,26c,,/48 descr: MPSV-NET_AGGREGATE origin: AS5588 mnt-by: GTSCZ-MNT created: 2013-09-06T08,57,39Z last-modified: 2013-09-06T08,57,39Z 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.