Obtaining A Registered Ip Address; How Ip Addresses Work - 3Com OfficeConnect 140M User Manual

B-2 A B: IP
PPENDIX AND

Obtaining a Registered IP Address

InterNIC Registration Service is the organization
responsible for supplying registered IP addresses.
The following contact information is correct at time of
publication:
Network Solutions, Inc.
Attn: InterNIC Registration Services
505 Huntmar Park Drive
Herndon
VA 20170
U.S.A.
Telephone: (1) (703) 742 4777
If you have access to the Internet, you can find
further information about InterNIC by entering the
URL http://www.internic.net into your web
browser.
IPX A
DDRESSES

How IP Addresses Work

To make Internet addressing easier to understand, IP
addresses are written in dotted decimal notation, for
example:
191.0.0.72
(10111111.00000000.00000000.01001000 in binary)
The IP address field is affected by:
Classes
Subnets
Classes
Depending on the Class (or type) of the IP address,
there are many ways that the address field can be
divided into a network number and a device number.
The number used to convey how an IP address is
divided is determined by the most significant bits in
the 32-bit address field.
There are four classes of IP addresses. Each address
class begins with a unique bit pattern, which is used
by the Internet software residing on your devices to
identify the address class.