AS3491 PCCW Global, Inc.
220.127.116.11/21 - DNACOMM-5
NetHandle: NET-209-8-110-0-1 OrgID: C01916403 Parent: NET-209-8-0-0-1 NetName: DNACOMM-5 NetRange: 18.104.22.168 - 22.214.171.124 NetType: reassignment OriginAS: 3491 RegDate: 2008-04-07 Updated: 2008-04-07 Source: ARIN OrgID: C01916403 OrgName: DNA Communications INC CanAllocate: Street: 601 First AVE City: Rochelle State/Prov: IL Country: US PostalCode: 61068 RegDate: 2008-04-07 Updated: 2011-03-19 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.