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Domain Name Service (DNS)

This article explains nameservers used on campus.

IP Addressing on the Data Network

Domain Name Service DNS

Domain name service for the uchicago.edu domain is provided by these IP addresses on campus:

  • dns1.uchicago.edu (128.135.247.50)
  • dns2.uchicago.edu (128.135.249.50)

What is a Nameserver? What is DNS?

DNS stands for Domain Name System and is the distributed system used to name machines on the Internet. While computers prefer to address each other using numbers, human beings have difficulty remember long strings of arbitrary numbers and so prefer names. DNS handles the correspondence between names and those arbitrary numbers so humans don't have to.

DNS has a distributed architecture. Thereis no “master” database which contains a list of all the hosts in the Internet. Instead, there is a master database of domains and nameservers. A domain is a section of the network. For instance, uchicago.edu is a domain and contains all the hosts here at the University of Chicago. Nameservers contain information about the hosts located in that domain and also know how to get information on hosts that lie outside the domain.

An individual network host must know the IP address of a name server in order to query for translations of other addresses. There are two IP addresses for name service at the University of Chicago. When setting up TCP/IP software that requires a nameserver, you can use either of these, although most operating systems allow for a name server and an alternate name server so you may choose to use both.

Domain name service for the uchicago.edu domain is provided by these IP addresses on campus:

  • dns1.uchicago.edu (128.135.247.50)
  • dns2.uchicago.edu (128.135.249.50)

These IP addresses should be used whenever software requires a name server address for the uchicago.edu domain. To request DNS changes for the uchicago.edu domain, use our Web form.

What about bsd.uchicago.edu, lib.uchicago.edu, and others?

Just as there is no master server for the entire Internet, a local nameserver does not have to contain information on all the hosts in its domain. Domains can be broken into subdomains for a variety of reasons. One reason is to break the namespace into logical segments. For instance, rh.uchicago.edu is a logical segment of uchicago.edu which contains all the hosts in the Residence Halls. Certain subdomains can be delegated to other nameservers. Then, the main nameserver “points” to these others when a request comes in for that subdomain. Here at the University of Chicago, we have a very limited number delegated subdomains, some of which provide their own name servers and handle the assignment of names and IP addresses. Some are managed by Data Networking. Please use the contact information from each entity below to request DNS services or information.

Biological Sciences Division
bsd.uchicago.edu subdomain
Use one of the nameservers listed above for uchicago.edu
Use our Web form or contact ip-admin@uchicago.edu

Center for Population Economics
cpe.uchicago.edu subdomain
name server 128.135.37.8
contact hostmaster@nerdy.cpe.uchicago.edu

Computer Science Department
cs.uchicago.edu subdomain
name server 128.135.11.87
contact hostmaster@cs.uchicago.edu

Harris School
harrisschool.uchicago.edu
Use one of the nameservers listed above for uchicago.edu
Use our Web form or contact ip-admin@uchicago.

Library
lib.uchicago.edu subdomain
name server 128.135.53.3
contact ip-admin@lib.uchicago.edu

Social Sciences & Public Policy Computing Center
spc.uchicago.edu subdomain
Use one of the nameservers listed above for uchicago.edu
Use our Web form or contact ip-admin@uchicago.edu

Social Science Research Computing
src.uchicago.edu subdomain
name server 128.135.252.3
contact ip-admin@src.uchicago.edu

Yerkes Observatory
yerkes.uchicago.edu subdomain
name server 128.135.40.2
contact sysadmin@yerkes.uchicago.edu




Keywords: ip address data network nameservers bsd cpe cs harrisschool lib spc src yerkes   Doc ID: 19780
Owner: Mike R.Group: University of Chicago
Created: 2011-08-16 13:47 CSTUpdated: 2014-10-09 06:14 CST
Sites: University of Chicago