inet6num: 2a01,8e20,,/32 netname: DE-SEEBURGER-20140210 country: DE org: ORG-SA1418-RIPE admin-c: SEE28-RIPE tech-c: SEE28-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-lower: SUPER-SYSMAN mnt-routes: SUPER-SYSMAN mnt-routes: TXX-MNT notify: email@example.com created: 2014-02-10T10,00,46Z last-modified: 2016-04-14T10,05,53Z source: RIPE organisation: ORG-SA1418-RIPE org-name: SEEBURGER AG org-type: LIR address: Edisonstrasse 1 address: 75015 address: Bretten address: GERMANY phone: +497252962990 fax-no: +497252962222 e-mail: firstname.lastname@example.org mnt-ref: RIPE-NCC-HM-MNT mnt-ref: SUPER-SYSMAN mnt-by: RIPE-NCC-HM-MNT abuse-c: SEE28-RIPE created: 2013-12-12T14,20,51Z last-modified: 2016-10-06T15,44,40Z source: RIPE role: SEE TECH_CONTACT address: Edisonstr.1 address: 75015 Bretten e-mail: email@example.com abuse-mailbox: firstname.lastname@example.org admin-c: THEU1-RIPE tech-c: THEU1-RIPE nic-hdl: SEE28-RIPE mnt-by: SUPER-SYSMAN created: 2014-02-05T12,52,42Z last-modified: 2014-02-05T12,52,42Z source: RIPE route6: 2a01,8e20,,/32 descr: Seeburger AG descr: via TelemaxX TK origin: AS12843 mnt-by: TXX-MNT mnt-by: SUPER-SYSMAN created: 2014-04-25T09,01,21Z last-modified: 2014-04-25T09,01,21Z 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.