AS13977 FAIRPOINT COMMUNICATIONS, INC.
2604:6e00::/36 - FAIRPOINT-NET-7
V6NetHandle: NET6-2604-6E00-1 OrgID: FAIRPO-3 Parent: NET6-2600-1 NetName: FAIRPOINT-NET-7 NetRange: 2604:6E00:: - 2604:6E00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation RegDate: 2010-11-05 Updated: 2016-02-23 TechHandle: TUMAS1-ARIN Source: ARIN OrgID: FAIRPO-3 OrgName: FAIRPOINT COMMUNICATIONS, INC. CanAllocate: Street: 770 Elm St City: Manchester State/Prov: NH Country: US PostalCode: 03101 RegDate: 2002-02-03 Updated: 2018-05-23 OrgTechHandle: PETER825-ARIN OrgTechHandle: LAMPL6-ARIN OrgAdminHandle: BADEA2-ARIN OrgAbuseHandle: FCA40-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.