V6NetHandle: NET6-2610-58-1 OrgID: BOSU Parent: NET6-2610-1 NetName: BU-NETV6 NetRange: 2610:58:: - 2610:58:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation RegDate: 2006-03-24 Updated: 2012-03-02 NOCHandle: NOC319-ARIN AbuseHandle: IRT1-ARIN TechHandle: NOC318-ARIN Source: ARIN OrgID: BOSU OrgName: Boston University CanAllocate: Street: Information Services & Technology Street: 111 Cummington Mall City: Boston State/Prov: MA Country: US PostalCode: 02215 Comment: Please send intrusion and other security related reports to email@example.com, Comment: SPAM reports should be sent to firstname.lastname@example.org, routing and access issues Comment: to email@example.com. RegDate: 1970-01-01 Updated: 2017-01-28 OrgNOCHandle: NOC319-ARIN OrgAbuseHandle: IRT1-ARIN OrgAdminHandle: NOC319-ARIN OrgTechHandle: NOC319-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.