AS13490 Buckeye Cablevision, Inc.
2600:2800::/30 - BUCKEYE
V6NetHandle: NET6-2600-2800-1 OrgID: BUCKEY-4 Parent: NET6-2600-1 NetName: BUCKEYE NetRange: 2600:2800:: - 2600:2803:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 13490 RegDate: 2010-09-23 Updated: 2012-03-02 Source: ARIN OrgID: BUCKEY-4 OrgName: Buckeye Cablevision, Inc. CanAllocate: Street: 5566 Southwyck Blvd. City: Toledo State/Prov: OH Country: US PostalCode: 43614 RegDate: 2000-11-10 Updated: 2017-02-08 ReferralServer: rwhois://rwhois.buckeyecom.net:4321 OrgTechHandle: WEBER83-ARIN OrgTechHandle: INE20-ARIN OrgNOCHandle: INE20-ARIN OrgAdminHandle: INE20-ARIN OrgAbuseHandle: ABUSE5855-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.