TCP/IP - Computer Busses - page 354

Table 23.4 Internet domain assignments for web servers

Web server Internet domain name Internet IP address

NEC

web.nec.com 143.101.112.6

Sony

www.sony.com 198.83.178.11

Intel

www.intel.com 134.134.214.1

IEEE

www.ieee.com 140.98.1.1

University of Bath

www.bath.ac.uk 136.38.32.1

University of Edinburgh www.ed.ac.uk 129.218.128.43

IEE

www.iee.org.uk 193.130.181.10

University of Manchester

www.man.ac.uk 130.88.203.16

23.8 Internet naming structure

The Internet naming structure uses labels separated by periods; an example is
eece.napier.ac.uk . It uses a hierarchical structure where organisations are grouped into
primary domain names. These are com (for commercial organisations), edu (for educational
organisations), gov (for government organisations), mil (for military organisations), net
(Internet network support centers) or org (other organisations). The primary domain name
may also define the country in which the host is located, such as uk (United Kingdom), fr
(France), and so on. All hosts on the Internet must be registered to one of these primary do-
main names.
The labels after the primary field describe the subnets within the network. For example in
the address eece.napier.ac.uk , the ac label relates to an academic institution within the uk ,
napier to the name of the institution and eece the subnet within that organisation. An exam-
ple structure is illustrated in Figure 23.10.

edu gov com mil usa uk fr

ac

intel sony nec

ed bath napier man

eece.napier.ac.uk eece cs mmse

www.eece.napier.ac.uk www

Figure 23.10 Example domain naming