V6NetHandle: NET6-2607-F3E0-1 OrgID: SCC-21 Parent: NET6-2600-1 NetName: SENTEXCO NetRange: 2607:F3E0:: - 2607:F3E0:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11647 RegDate: 2008-04-01 Updated: 2012-03-02 NOCHandle: NOCSC-ARIN TechHandle: TSSC-ARIN AbuseHandle: ADSC-ARIN Source: ARIN OrgID: SCC-21 OrgName: Sentex Communications Corporation CanAllocate: Street: 240 Holiday Inn Drive, unit D City: Cambridge State/Prov: ON Country: CA PostalCode: N3C 3X4 RegDate: 1994-09-22 Updated: 2017-01-28 ReferralServer: rwhois://rwhois.sentex.ca:4321 OrgAdminHandle: TSSC-ARIN OrgTechHandle: TSSC-ARIN OrgNOCHandle: MT1960-ARIN OrgAbuseHandle: TSSC-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.