AS45899 VNPT Corp
18.104.22.168/21 - CUCBUUDIENTW-NET
inetnum: 22.214.171.124 - 126.96.36.199 netname: CUCBUUDIENTW-NET country: vn descr: Cuc Buu dien TW admin-c: NVC4-AP tech-c: NVC4-AP status: ASSIGNED NON-PORTABLE mnt-by: MAINT-VN-VNPT last-modified: 2008-10-14T09:16:14Z source: APNIC person: Nguyen Viet Cuong nic-hdl: NVC4-AP e-mail: firstname.lastname@example.org address: To 9, Quan Hoa, Cau Giay, Ha Noi phone: +84-4-8041093 fax-no: +84-4-7821462 country: vn mnt-by: MAINT-VN-VNPT last-modified: 2008-10-07T02:41:01Z source: APNIC
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.