NetHandle: NET-137-227-0-0-1 OrgID: UDI-5 Parent: NET-137-0-0-0-0 NetName: US-DEPARTMENT-OF-THE-INTERIOR NetRange: 220.127.116.11 - 18.104.22.168 NetType: allocation RegDate: 1990-01-10 Updated: 2008-03-20 TechHandle: JFH8-ARIN NOCHandle: NETWO953-ARIN AbuseHandle: SMI119-ARIN Source: ARIN OrgID: UDI-5 OrgName: US Department of the Interior CanAllocate: Street: 12201 Sunrise Valley Drive City: Reston State/Prov: VA Country: US PostalCode: 20192 RegDate: 1990-01-10 Updated: 2018-03-26 OrgAbuseHandle: JFH8-ARIN OrgTechHandle: JFH8-ARIN OrgNOCHandle: NETWO953-ARIN OrgAdminHandle: OTTST1-ARIN Source: ARIN
IP Addresses in this 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.