inet6num: 2a00,c940,,/32 netname: DE-TOPS-NET-20120328 country: DE org: ORG-tA13-RIPE admin-c: SF59-RIPE tech-c: TOPS1-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: TOPS-RIPE-MNT mnt-lower: HERMSIT-MNT mnt-lower: TOPS-RIPE-MNT mnt-routes: TOPS-RIPE-MNT notify: firstname.lastname@example.org created: 2012-03-28T06,48,24Z last-modified: 2016-12-20T18,17,34Z source: RIPE organisation: ORG-tA13-RIPE org-name: tops.net GmbH & Co. KG org-type: LIR address: Holtorferstr. 35 address: D-53229 address: Bonn address: GERMANY phone: +4922897710 fax-no: +492289771199 abuse-c: AR13641-RIPE mnt-ref: TOPS-RIPE-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: TOPS-RIPE-MNT admin-c: JR1481-RIPE admin-c: TAKT1-RIPE admin-c: SF59-RIPE created: 2004-04-17T11,13,04Z last-modified: 2016-12-20T18,17,44Z source: RIPE e-mail: email@example.com role: tops.net DNS Guardian address: tops.net GmbH & Co. KG address: Holtorfer Str. 35 address: D-53229 Bonn address: Germany phone: +49 228 9771 0 fax-no: +49 228 9771 199 e-mail: firstname.lastname@example.org admin-c: TOPS2-RIPE tech-c: TOPS2-RIPE nic-hdl: TOPS1-RIPE remarks: Internic, TN54-ORG notify: email@example.com mnt-by: TOPS-RIPE-MNT created: 1970-01-01T00,00,00Z last-modified: 2014-07-18T09,49,03Z source: RIPE abuse-mailbox: firstname.lastname@example.org person: Stefan Funk address: tops.net GmbH & Co. KG address: Holtorfer Str. 35 address: D-53229 Bonn address: Germany phone: +49 228 9771 0 fax-no: +49 228 9771 199 e-mail: email@example.com nic-hdl: SF59-RIPE remarks: Internic, SF261 notify: firstname.lastname@example.org mnt-by: TOPS-RIPE-MNT created: 1970-01-01T00,00,00Z last-modified: 2003-02-05T15,57,20Z source: RIPE route6: 2a00,c940,,/32 descr: tops.net IPv6 Supernet origin: as12581 mnt-by: tops-ripe-mnt created: 2015-06-12T09,57,38Z last-modified: 2015-06-12T09,57,38Z 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.