This content is no longer maintained. Please visit our new website.

ACCC Home Page Academic Computing and Communications Center  
Accounts / Passwords Email Labs / Classrooms Telecom Network Security Software Computing and Network Services Education / Teaching Getting Help
 
The A3C Connection, Oct/Nov/Dec 2000 The A3C Connection
Oct/Nov/Dec Contents Slamming Spamming Fig 2: Legit Email Headers Fig 3: Spam Email Headers Reading Email Headers
nslookup More Info on Headers and Spam Designing Accessible Web Pages Web Accessiblity Contest About the A3C Connection

nslookup: Matching Host Names and IP Addresses

 

The nslookup command allows you to match a machine's Internet domain name (such email1.cc.uic.edu) with its IP address (such as 128.248.150.51) or vice versa. There's a nslookup command tigger and icarus. It's in WS Ping Tools in the Windows Network Services Kit (or you can open a DOS window and enter the nslookup command directly). There are also various nslookup Web sites, including InfoBear's http://www.infobear.com/nslookup.shtml.

Most nslookup utilities determine the search type from the format of the input. I logged into tigger to run these nslookup commands:

>nslookup email1.cc.uic.edu
Server: uic-dns2.uic.edu
Address: 128.248.7.50

Name: email1.cc.uic.edu
Address: 128.248.150.51

>nslookup 128.248.150.51
Server: uic-dns2.uic.edu
Address: 128.248.7.50

Name: email1.cc.uic.edu
Address: 128.248.150.51

(Wondering what the email1.cc.uic.edu here and in figure 2 is? My email account is on mailserv, which, at this time, is a cluster of two Unix machines. My account happens to be on the second of the two machines, email1. The first is email0.)

 
The A3C Connection, Oct/Nov/Dec 2000 Previous:  Reading Email Headers Next:  More Info on Headers and Spam


2001-4-10  connect@uic.edu
UIC Home Page Search UIC Pages Contact UIC