inet6num: 2a02,788,,/29 netname: DE-TELEMAXX-20080910 country: DE org: ORG-TTG2-RIPE admin-c: TXX100-RIPE tech-c: TXX100-RIPE status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: TXX-MNT mnt-lower: TXX-MNT mnt-routes: TXX-MNT created: 2015-09-18T08,51,07Z last-modified: 2016-06-06T08,24,17Z source: RIPE organisation: ORG-TTG2-RIPE org-name: TelemaxX Telekommunikation GmbH org-type: LIR address: Amalienbadstrasse 41 Bau 61 address: D-76227 address: Karlsruhe address: GERMANY phone: +49721130880 fax-no: +497211308877 e-mail: email@example.com admin-c: MK18216-RIPE admin-c: SS6097-RIPE admin-c: AM37741-RIPE admin-c: HK3438-RIPE admin-c: SC11180-RIPE admin-c: MK13587-RIPE admin-c: TOl1337-RIPE tech-c: TXX100-RIPE abuse-c: TXX100-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: TXX-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: TXX-MNT created: 2004-04-17T11,12,45Z last-modified: 2016-06-06T08,24,12Z source: RIPE role: TelemaxX technical contact address: TelemaxX Telekommunikation GmbH address: Amalienbadstr. 41 address: Bau 61 address: D-76227 Karlsruhe address: DE phone: +49 721 13088 0 fax-no: +49 721 13088 77 e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com admin-c: SS6097-RIPE admin-c: SC11180-RIPE tech-c: HK3438-RIPE tech-c: MK13587-RIPE tech-c: TOl1337-RIPE tech-c: AM37741-RIPE tech-c: MK18216-RIPE nic-hdl: TXX100-RIPE mnt-by: TXX-MNT created: 2002-05-23T13,11,26Z last-modified: 2016-03-17T07,54,21Z source: RIPE route6: 2a02,788,,/29 descr: DE-TELEMAXX-IPv6 origin: AS12843 mnt-by: TXX-MNT created: 2015-09-18T09,08,55Z last-modified: 2015-09-18T09,08,55Z 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.