V6NetHandle: NET6-2606-4800-1 OrgID: BSTL Parent: NET6-2600-1 NetName: BESTNAP NetRange: 2606:4800:: - 2606:4800:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11430 RegDate: 2010-05-19 Updated: 2012-03-02 TechHandle: HOSTM177-ARIN NOCHandle: HOSTM177-ARIN AbuseHandle: HOSTM177-ARIN Source: ARIN OrgID: BSTL OrgName: Bestline Communications, L.P. CanAllocate: Street: 500 Capital of Tx Hwy N. Street: Building 8, Suite 200 City: Austin State/Prov: TX Country: US PostalCode: 78746 RegDate: 2000-10-18 Updated: 2017-01-28 OrgTechHandle: HOSTM177-ARIN OrgAdminHandle: HOSTM177-ARIN OrgAbuseHandle: HOSTM177-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.