V6NetHandle: NET6-2605-9000-1 OrgID: EDC-83 Parent: NET6-2600-1 NetName: NETEL-ARIN6-BLK06 NetRange: 2605:9000:: - 2605:9000:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 10929 RegDate: 2010-03-29 Updated: 2018-01-26 Source: ARIN OrgID: EDC-83 OrgName: eStruxture Data Centers Inc. CanAllocate: Street: 800 Square Victoria, SS1-060 Street: C.P. 118 City: Montreal State/Prov: QC Country: CA PostalCode: H4Z 1B7 RegDate: 2017-10-05 Updated: 2018-02-02 ReferralServer: rwhois://rwhois.estruxture.net:4321 OrgAbuseHandle: ESTRU2-ARIN OrgTechHandle: ESTRU1-ARIN OrgAdminHandle: ESTRU-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.