2001:67c:2c::/48 - METEONET-IPv6
inet6num: 2001,67c,2c,,/48 netname: METEONET-IPv6 country: NL org: ORG-MCb3-RIPE admin-c: MGB165-RIPE tech-c: MGB165-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: SN-LIR-MNT mnt-routes: SN-LIR-MNT mnt-domains: SN-LIR-MNT created: 2009-07-16T14,12,33Z last-modified: 2016-12-13T11,53,32Z source: RIPE sponsoring-org: ORG-Sb3-RIPE organisation: ORG-MCb3-RIPE org-name: Meteo Consult B.V. org-type: OTHER address: Agro Businesspark 99-101 address: 6708 PV Wageningen address: The Netherlands phone: +31 317 399800 e-mail: email@example.com abuse-c: AR22874-RIPE admin-c: MGB165-RIPE tech-c: MGB165-RIPE mnt-ref: SN-LIR-MNT mnt-by: SN-LIR-MNT created: 2009-07-16T13,08,28Z last-modified: 2016-12-13T12,07,46Z source: RIPE role: MeteoGroup BV address: P.O. Box 617 address: NL-6700 AP Wageningen address: The Netherlands e-mail: firstname.lastname@example.org nic-hdl: MGB165-RIPE notify: lir@SURFnet.nl mnt-by: SN-LIR-MNT created: 2014-06-25T14,31,12Z last-modified: 2016-12-13T11,53,32Z source: RIPE route6: 2001,67c,2c,,/48 descr: METEOCON origin: AS1132 mnt-by: AS1103-MNT created: 2010-05-07T08,06,06Z last-modified: 2010-05-07T08,06,06Z 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.