AS13876 FiberLight, LLC
2607:8300:1::/48 - FIBERLIGHT
V6NetHandle: NET6-2607-8300-1 OrgID: FIBER-64 Parent: NET6-2600-1 NetName: FIBERLIGHT NetRange: 2607:8300:: - 2607:8300:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 13876 RegDate: 2012-05-22 Updated: 2012-05-22 Source: ARIN OrgID: FIBER-64 OrgName: FiberLight, LLC CanAllocate: Street: 11700 Great Oaks Way Street: Suit 100 City: Alpharetta State/Prov: GA Country: US PostalCode: 30022 RegDate: 2010-06-08 Updated: 2017-01-28 OrgTechHandle: NETWO4145-ARIN OrgNOCHandle: NETWO4145-ARIN OrgAdminHandle: IAB8-ARIN OrgAbuseHandle: NETWO4145-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.