inet6num: 2a02,a90,,/32 netname: CH-UNISOURCE-20090224 country: CH org: ORG-SI1-RIPE admin-c: SIE3-RIPE tech-c: SIE3-RIPE tech-c: SISA6-RIPE status: ALLOCATED-BY-RIR notify: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: CH-UNISOURCE-MNT mnt-lower: CH-UNISOURCE-MNT mnt-lower: SISA-MNT mnt-routes: CH-UNISOURCE-MNT mnt-routes: SISA-MNT created: 2009-02-24T11,11,10Z last-modified: 2016-05-19T09,09,55Z source: RIPE organisation: ORG-SI1-RIPE org-name: Swisscom (Switzerland) Ltd org-type: LIR address: Postfach address: CH- 3050 address: Bern address: SWITZERLAND phone: +41582219833 fax-no: +41582218098 e-mail: firstname.lastname@example.org admin-c: SISA6-RIPE admin-c: AC19120-RIPE admin-c: UB852-RIPE admin-c: AF482-RIPE admin-c: PM1829-RIPE admin-c: SIRT1-RIPE admin-c: AC2332-RIPE admin-c: SD983-RIPE admin-c: AR12520-RIPE admin-c: SIRT1-RIPE admin-c: ARD21-RIPE admin-c: JANB-RIPE abuse-c: SIE3-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: CH-UNISOURCE-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: CH-UNISOURCE-MNT created: 2004-04-17T11,03,31Z last-modified: 2016-05-19T09,09,47Z source: RIPE role: Swisscom IP-Plus Engineering address: CH-3050 Bern address: Switzerland fax-no: +41 58 221 80 98 e-mail: email@example.com abuse-mailbox: firstname.lastname@example.org admin-c: AC2332-RIPE tech-c: AC2332-RIPE tech-c: AC19120-RIPE tech-c: AR12520-RIPE tech-c: AF482-RIPE tech-c: JANB-RIPE tech-c: PM1829-RIPE tech-c: SD983-RIPE nic-hdl: SIE3-RIPE notify: email@example.com mnt-by: CH-UNISOURCE-MNT created: 2002-08-16T15,08,51Z last-modified: 2013-03-11T14,15,38Z source: RIPE role: SISA technic address: Swisscom (Schweiz) AG 3006 Bern SWITZERLAND e-mail: firstname.lastname@example.org admin-c: ARD21-RIPE admin-c: UB852-RIPE tech-c: ARD21-RIPE tech-c: UB852-RIPE nic-hdl: SISA6-RIPE mnt-by: SISA-MNT created: 2009-02-27T09,11,45Z last-modified: 2016-09-22T08,03,19Z source: RIPE route6: 2a02,a90,,/32 descr: Swisscom IT Services AG origin: AS12429 mnt-by: SISA-MNT created: 2015-04-29T08,54,42Z last-modified: 2015-04-29T08,54,42Z source: RIPE route6: 2a02,a90,,/32 descr: Swisscom IT Services AG origin: AS3303 mnt-by: CH-UNISOURCE-MNT mnt-by: SISA-MNT created: 2012-04-11T13,45,26Z last-modified: 2012-04-11T13,45,26Z 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.