V6NetHandle: NET6-2607-F398-1 OrgID: MTAS Parent: NET6-2600-1 NetName: MTAS-IPV6-BLK1 NetRange: 2607:F398:: - 2607:F398:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11090 RegDate: 2008-03-18 Updated: 2012-03-02 TechHandle: JM1702-ARIN NOCHandle: SYSAD17-ARIN AbuseHandle: SYSAD17-ARIN Source: ARIN OrgID: MTAS OrgName: MTA Solutions CanAllocate: Street: 1740 S. Chugach St City: Palmer State/Prov: AK Country: US PostalCode: 99654 RegDate: 1999-02-01 Updated: 2017-01-28 OrgAdminHandle: JM1702-ARIN OrgTechHandle: JM1702-ARIN OrgAbuseHandle: JM1702-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.