AS13329 Kansas Fiber Network, LLC
2606:3900::/32 - KFNL
V6NetHandle: NET6-2606-3900-1 OrgID: KFNL Parent: NET6-2600-1 NetName: KFNL NetRange: 2606:3900:: - 2606:3900:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 13329 RegDate: 2011-10-20 Updated: 2012-02-24 Source: ARIN OrgID: KFNL OrgName: Kansas Fiber Network, LLC CanAllocate: Street: 8304 E 34th Street Circle North Street: Bldg 1400 City: Wichita State/Prov: KS Country: US PostalCode: 67226 RegDate: 2010-06-18 Updated: 2018-11-01 OrgTechHandle: HAGEM13-ARIN OrgNOCHandle: NOC32517-ARIN OrgAdminHandle: HAGEM13-ARIN OrgTechHandle: DRW64-ARIN OrgAbuseHandle: NOC32517-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.