inet6num: 2a03,efc0,,/29 netname: US-STRONG-20160419 country: GB org: ORG-STL82-RIPE admin-c: JL10348-RIPE tech-c: JL10348-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: us-strong-1-mnt mnt-lower: us-strong-1-mnt mnt-routes: us-strong-1-mnt created: 2016-04-19T08,16,29Z last-modified: 2016-07-25T13,24,36Z source: RIPE organisation: ORG-STL82-RIPE org-name: Strong Technology, LLC org-type: LIR address: 127 W. Fairbanks Ave. # 139 address: 32789 address: Winter Park, FL address: UNITED STATES phone: +1-407-215-9193 e-mail: firstname.lastname@example.org admin-c: JL10348-RIPE tech-c: JL10348-RIPE abuse-c: STAD1-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: us-strong-1-mnt mnt-by: RIPE-NCC-HM-MNT mnt-by: us-strong-1-mnt created: 2016-04-14T14,37,06Z last-modified: 2016-07-25T14,08,19Z source: RIPE person: Jon Lewis address: 127 W. Fairbanks Ave. # 139 address: 32789 address: Winter Park, FL address: UNITED STATES phone: +1-407-215-9193 nic-hdl: JL10348-RIPE mnt-by: us-strong-1-mnt created: 2016-04-14T14,37,06Z last-modified: 2016-04-14T14,37,06Z 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.