See also

• CU Exchange's tools, for techs
• Cornell's email forwarding service
• Michael Hint's useful links, in SharePoint

DNS DB

Documented page

• http://dnsdb.cit.cornell.edu/
  • Resolves to <http://www.it.cornell.edu/services/netreg/howto/>
• See the links there for:
  • Host list <= Usually the one to use
  • Subnet list
  • Domain list

Many, many tools located under the DNSDB page, too:

• https://dnsdb.cit.cornell.edu/dnsdb.html
• Example: MAC address look-ups.

CIT IP to jack tool

IP to active jack switch port lookup:

• http://nettrac.cit.cornell.edu/tracking/

Source:

• http://nettrac.cit.cornell.edu/
  • http://nettrac.cit.cornell.edu/cgi-bin/welcome.cgi

List of active jack switch ports:

• http://mrtg.cit.cornell.edu/vlan/

The first resource's top-level page is called, "CIT Network Traffic Analysis Center". It contains two services/ tools at the top level:

• Usage statistics for individual IP addresses
  • Offers both an interactive form, or via a shortcut to get the usage statistics for the computer currently being used.
• IP/MAC/jack address tracking tools

IP range pools

Cornell core service IP addresses:

• https://aclviewer.cit.cornell.edu/edgeacltemplates/cornellservice.txt

. Useful info for ACL and other permission-settings. Includes large VDI pool, from March 2015.

DNS/CNAME/AREC tool

• http://dnsdb.cit.cornell.edu/dnsdb-cgi/list_domain.pl

Selection from CIT's FAQ

• What is an A record and why do I need one?
• What is a CNAME?

And CIT's domain name glossary.

No longer usable, retained here for historical reasons

DNS DB: "Hidden" page, for IT support providers

• http://www.cit.cornell.edu/computer/support/hostreg/dnsdb.html (no longer valid, as of 8/7/14)