inet6num: 2a05,4800,,/29 netname: RU-RECONN-20151027 country: RU org: ORG-LlcR2-RIPE admin-c: PBV-RIPE tech-c: REC-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: RECONN-MNT mnt-routes: RECONN-MNT created: 2015-10-27T09,34,50Z last-modified: 2016-09-12T14,39,31Z source: RIPE organisation: ORG-LlcR2-RIPE org-name: RECONN. Operator Svyazi, LLC org-type: LIR address: Bryanskaya str., build. 7, office 407. address: 121059 address: Moscow address: RUSSIAN FEDERATION e-mail: email@example.com abuse-c: AR16898-RIPE mnt-ref: RUFT-MNT mnt-ref: RECONN-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: RECONN-MNT created: 2010-10-20T08,50,06Z last-modified: 2016-09-12T14,39,38Z source: RIPE phone: +74959335355 fax-no: +74959335355 admin-c: AMG119-RIPE role: RECONN NOC address: Bryanskaya, 7 - 406, Moscow, Russian Federation e-mail: firstname.lastname@example.org phone: +7.495.933-5355 abuse-mailbox: email@example.com tech-c: PBV17-RIPE tech-c: AMG119-RIPE tech-c: SMS-RIPE admin-c: PBV17-RIPE admin-c: AMG119-RIPE admin-c: SMS-RIPE nic-hdl: REC-RIPE mnt-by: RECONN-MNT created: 2015-04-16T14,56,35Z last-modified: 2015-04-16T15,08,00Z source: RIPE person: Pavel B. Vasiliev address: Lenin's Hills, 6 address: Moscow, Russian Federation phone: +7 495 7833783 e-mail: firstname.lastname@example.org nic-hdl: PBV-RIPE mnt-by: PBV-MNT created: 2004-09-21T14,49,19Z last-modified: 2015-10-22T13,16,38Z 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.