AS156 Northeastern University
2607:5f00::/32 - NORTHEASTERN
V6NetHandle: NET6-2607-5F00-1 OrgID: NORTHE-7 Parent: NET6-2600-1 NetName: NORTHEASTERN NetRange: 2607:5F00:: - 2607:5F00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 156 RegDate: 2012-04-25 Updated: 2012-04-25 Source: ARIN OrgID: NORTHE-7 OrgName: Northeastern University CanAllocate: Street: 360 Huntington Avenue City: BOSTON State/Prov: MA Country: US PostalCode: 02115 RegDate: 1988-02-01 Updated: 2012-04-25 OrgTechHandle: NETOP29-ARIN OrgAdminHandle: RWH51-ARIN OrgAbuseHandle: NETOP29-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.