AS3491 PCCW Global, Inc.
126.96.36.199/21 - BTN--63-217-82
NetHandle: NET-63-217-82-0-1 OrgID: C02319097 Parent: NET-63-216-0-0-1 NetName: BTN--63-217-82 NetRange: 188.8.131.52 - 184.108.40.206 NetType: reassignment OriginAS: 3491 RegDate: 2009-09-17 Updated: 2009-09-17 Source: ARIN OrgID: C02319097 OrgName: Beyond The Network America, Inc. CanAllocate: Street: 399 Chai Wan Road PRC City: Hong Kong State/Prov: Country: HK PostalCode: RegDate: 2009-09-17 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.