AS22284 Department of the Interior, Office of theSecretary
220.127.116.11/16 - UC-RECNET
NetHandle: NET-140-217-0-0-1 OrgID: UBR Parent: NET-140-0-0-0-0 NetName: UC-RECNET NetRange: 18.104.22.168 - 22.214.171.124 NetType: assignment OriginAS: 688 RegDate: 1990-06-12 Updated: 2015-02-20 AbuseHandle: BORAB-ARIN TechHandle: RINEY2-ARIN Source: ARIN OrgID: UBR OrgName: U.S. Bureau of Reclamation CanAllocate: Street: IT Services Division, 84-21100 Street: P.O. Box 25007 City: Denver State/Prov: CO Country: US PostalCode: 80225 RegDate: 1990-06-12 Updated: 2015-02-20 OrgAdminHandle: RINEY2-ARIN OrgTechHandle: RINEY2-ARIN OrgAbuseHandle: BORAB-ARIN Source: ARIN
IP address subranges within this IP range
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.