Three domain name servers are maintained on the School's network.

ns1.it.usyd.edu.au	129.78.8.2	primary name server
ns2.it.usyd.edu.au	129.78.8.1	secondary name server
ns3.it.usyd.edu.au	129.78.8.25	secondary name server

The top level domain hosted in the School is

• it.usyd.edu.au

• cs.usyd.edu.au

The School also maintains two other domains equivalent in coverage to this top level.

• infosys.usyd.edu.au
  • to support virtual web hosting specific to the School's information systems groups
• cs.su.oz.au
  • maintained for historical reasons, supporting historical addressing predating edu.au.

Subdomains

Several subdomains are maintained.

• ug.it.usyd.edu.au
  • used to designate those machines in teaching service
• ug.cs.usyd.edu.au
  • an equivalent subdomain kept as part of the transition of the School's identity
• ug.infosys.usyd.edu.au
  • an equivalent subdomain for information systems use
• ug.cs.su.oz.au
  • an equivalent subdomain maintained for historical reasons
• gh.cs.usyd.edu.au & psrg.cs.usyd.edu.au
  • research group subdomains no longer in use and being phased out

Other hosted domains

The School also supports the domains

• ncss.edu.au/ncss.org.au
  • used by the National Computer Science School - a high school summer school run by the School
• ccss.org.au
  • the former name of the summer school, when sponsored by Compuware
• datamining.org.au
  • used by the data mining research staff

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