inet6num: 2a00,8860,,/29 netname: EU-PHOENIXNAP country: US org: ORG-PNL7-RIPE admin-c: DF5134-RIPE tech-c: AM23098-RIPE status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: PHOENIXNAP-EU-MNT mnt-lower: PHOENIXNAP-EU-MNT mnt-routes: PHOENIXNAP-EU-MNT created: 2016-01-21T10,22,52Z last-modified: 2016-07-21T12,58,34Z source: RIPE organisation: ORG-PNL7-RIPE org-name: PHOENIX NAP, LLC. org-type: LIR address: 2353, West University Drive address: 85281 address: Tempe address: UNITED STATES phone: +14804497750 fax-no: +14804498801 e-mail: MarcusB@cwie.net admin-c: DF5134-RIPE admin-c: AM23098-RIPE abuse-c: PAD45-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: PHOENIXNAP-EU-MNT abuse-mailbox: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: PHOENIXNAP-EU-MNT created: 2012-02-10T13,18,32Z last-modified: 2016-07-21T12,58,32Z source: RIPE person: Adrian Montebello address: PHOENIXNAP, LLC. address: 3402, East University Drive address: Phoenix 85034 Arizona address: US e-mail: firstname.lastname@example.org phone: +14804497750 nic-hdl: AM23098-RIPE mnt-by: PHOENIXNAP-EU-MNT created: 2012-02-22T17,06,18Z last-modified: 2014-08-25T10,48,05Z source: RIPE person: Danny Fuentes address: PHOENIXNAP, LLC. address: 3402, East University Drive address: Phoenix 85034 address: US phone: +1480 449 7750 nic-hdl: DF5134-RIPE mnt-by: PHOENIXNAP-EU-MNT created: 2012-11-29T14,37,08Z last-modified: 2012-11-29T14,37,08Z 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.