inet6num: 2a02:2788::/32 netname: BE-BRUTELE-20101026 country: BE org: ORG-BS1-RIPE admin-c: JMA50-RIPE tech-c: LD2581-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: TAC-BRUTELE mnt-routes: TAC-BRUTELE notify: firstname.lastname@example.org created: 2010-10-26T15:38:34Z mnt-domains: TAC-BRUTELE last-modified: 2018-02-16T13:45:01Z source: RIPE organisation: ORG-BS1-RIPE org-name: Brutele SC org-type: LIR address: Napelsstraat 29-31 address: B-1050 address: Brussels address: BELGIUM phone: +32 71967060 fax-no: +32 71967071 e-mail: email@example.com abuse-c: AR14158-RIPE admin-c: LD2581-RIPE mnt-ref: TAC-BRUTELE mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: TAC-BRUTELE created: 2004-04-17T11:00:07Z last-modified: 2018-02-16T13:45:03Z source: RIPE person: Jean-Michel Adant address: BRUTELE SC address: Napelsstraat 29-31 address: B-1050 Elsene address: Belgium phone: +32 2 5009941 fax-no: +32 2 5143267 e-mail: firstname.lastname@example.org nic-hdl: JMA50-RIPE notify: email@example.com mnt-by: TAC-BRUTELE created: 2001-09-27T14:21:41Z last-modified: 2003-12-22T08:12:34Z source: RIPE person: Laurent DELBASCOUR address: BRUTELE SC address: Rue Turenne, 65 address: 6000 Charleroi address: Belgium phone: +32 25009911 fax-no: +32 71277855 e-mail: firstname.lastname@example.org nic-hdl: LD2581-RIPE mnt-by: TAC-BRUTELE created: 1970-01-01T00:00:00Z last-modified: 2010-03-24T11:08:39Z source: RIPE route6: 2a02:2788::/32 descr: VOO origin: AS12392 mnt-by: TAC-BRUTELE created: 2010-12-10T11:25:35Z last-modified: 2010-12-10T11:25:35Z 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.