Nslookup
From Wikipedia, the free encyclopedia
- The correct title of this article is nslookup. The initial letter is shown capitalized due to technical restrictions.
The nslookup command can be used in Windows and Unix to find the IP addresses of a particular computer, using DNS lookup. The name means "name server lookup". The most common version of the program is included as part of the BIND package. A more modern alternative to nslookup is the dig program, also shipping with BIND.
[edit] Example usage
$ nslookup www.wikipedia.org Server: ns0.southern.edu Address: 216.229.224.4 Non-authoritative answer: Name: www.wikipedia.org Addresses: 207.142.131.248, 207.142.131.235, 207.142.131.236, 207.142.131.245 207.142.131.246, 207.142.131.247
[edit] Interpretation of the result
The first two lines are information about the server delivering the answer to the nslookup requested by the user. The next 2 lines tell the user the name and IP of the machine being looked up.
[edit] External links
- DNSstuff.com. Why nslookup is a good tool. Retrieved on June 20, 2006.[dead link]
- Jonathan de Boyne Pollard. nslookup is a badly flawed tool. Don't use it.. Frequently Given Answers. Retrieved on August 4, 2005.
- Brad Knowles (2001-07-06). "nslookup flaws". comp.protocols.dns.bind. (Google Groups). — 4 flaws in nslookup
- Barry Margolin (2001-07-06). "nslookup flaws". comp.protocols.dns.bind. (Google Groups). — a 5th flaw in nslookup
- Daniel J. Bernstein. Notes on nslookup. Retrieved on August 4, 2005.
