2607:f5d8:3::/48 - FLRNETV6
V6NetHandle: NET6-2607-F5D8-1 OrgID: FLL-8 Parent: NET6-2600-1 NetName: FLRNETV6 NetRange: 2607:F5D8:: - 2607:F5D8:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11096 RegDate: 2008-08-13 Updated: 2016-06-02 TechHandle: OHARA-ARIN NOCHandle: NOC2065-ARIN AbuseHandle: NOC2065-ARIN Source: ARIN OrgID: FLL-8 OrgName: Florida LambdaRail, LLC CanAllocate: Street: Computing and Networking Services Street: Room 112, SSRB, Stadium Road Street: PO BOX 112050 City: Gainesville State/Prov: FL Country: US PostalCode: 32611-2050 RegDate: 2006-03-06 Updated: 2017-07-24 OrgAdminHandle: GRIFF165-ARIN OrgTechHandle: GRIFF165-ARIN OrgTechHandle: OHARA-ARIN OrgNOCHandle: NOC2065-ARIN OrgAbuseHandle: OHARA-ARIN Source: ARIN
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.