V6NetHandle: NET6-2607-F870-1 OrgID: AMPR Parent: NET6-2600-1 NetName: CENT-IPV6 NetRange: 2607:F870:: - 2607:F870:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11992 RegDate: 2009-03-05 Updated: 2017-03-01 Source: ARIN OrgID: AMPR OrgName: AT&T Mobility Puerto Rico CanAllocate: Street: The Prentice Hall Corp Street: P.O. Box 192830 City: San Juan State/Prov: PR Country: PR PostalCode: 00902-2946 RegDate: 2014-01-30 Updated: 2017-04-25 OrgTechHandle: DVE19-ARIN OrgNOCHandle: DVE19-ARIN OrgAdminHandle: DVE19-ARIN OrgAbuseHandle: DVE19-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.