AS174 Cogent Communications
220.127.116.11/16 - IACOM-1
NetHandle: NET-143-240-0-0-1 OrgID: PSI-6 Parent: NET-143-0-0-0-0 NetName: IACOM-1 NetRange: 18.104.22.168 - 22.214.171.124 NetType: assignment RegDate: 1990-10-23 Updated: 1993-04-14 TechHandle: WJ44-ARIN Source: ARIN OrgID: PSI-6 OrgName: Performance Systems International, Incorporated CanAllocate: Street: System and Computer Technology Corporation Street: 4 Country View Road City: Malvern State/Prov: PA Country: US PostalCode: 19355 RegDate: 1990-10-23 Updated: 2011-09-24 OrgTechHandle: WJ44-ARIN OrgAdminHandle: WJ44-ARIN OrgAbuseHandle: WJ44-ARIN Source: ARIN POCHandle: WJ44-ARIN IsRole: N LastName: Woolley FirstName: Jack Street: 4 Country View Road City: Malvern State/Prov: PA Country: US PostalCode: 19355 RegDate: 1993-01-04 Updated: 2006-03-31 OfficePhone: +1-610-578-6111 Mailbox: email@example.com 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.