The InterNIC is responsible for assigning ranges of addresses for use. The University of Chicago has the domain name uchicago.edu and all IP addresses between 128.135.0.0 and 128.135.255.255. With some exceptions, every host on campus with a connection to the Internet is assigned an IP address in that range and a host name is mapped to the address. This information is added to the portion of the DNS database that we maintain here for distribution to the world. We provide Web forms to help you register a host .
Registration is necessary for two purposes.
Without a central record of your IP address and host name mapping, someone else on campus may be assigned that same address. Network traffic intended for your computer may end up somewhere else, or you could receive traffic you don't want. Further, if your IP address and host name aren't in the database we share with the world, many servers and hosts on and off campus will not be able to find your machine to return information you request. Your own self-interest as well as good network citizenship are in favor of registering hosts. It's equally important to unregister a host when it's no longer in use.