NetHandle: NET-204-110-128-0-1 OrgID: FIF Parent: NET-204-0-0-0-0 NetName: FMRCO NetRange: 220.127.116.11 - 18.104.22.168 NetType: assignment RegDate: 1994-10-05 Updated: 2009-07-14 TechHandle: ZF32-ARIN Source: ARIN OrgID: FIF OrgName: Fidelity Investments, Fidelity CanAllocate: Street: 82 Devonshire St. F3B City: Boston State/Prov: MA Country: US PostalCode: 02109 RegDate: 1994-10-05 Updated: 2011-09-24 OrgTechHandle: ZF32-ARIN OrgAdminHandle: ZF32-ARIN OrgAbuseHandle: ZF32-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.