September 2001
Intermediate to advanced
352 pages
11h 1m
English
You’ll come to use nslookup for little chores almost every day: for example, finding out the IP address or MX records for a given domain name or querying a particular name server for data. We’ll cover these common tasks before moving on to the more occasional stuff.
By default, nslookup looks up the address for a name or the name for an address. You can look up any data type by changing the querytype, as we show in this example:
C:\>nslookupDefault Server: terminator.movie.edu Address: 192.249.249.3 >misery-- Look up address Server: terminator.movie.edu Address: 192.249.249.3 Name: misery.movie.edu Address: 192.253.253.2 >192.253.253.2-- Look up name Server: terminator.movie.edu Address: 192.249.249.3 Name: misery.movie.edu Address: 192.253.253.2 >set q=mx-- Look up MX data >wormholeServer: terminator.movie.edu Address: 192.249.249.3 wormhole.movie.edu MX preference = 10, mail exchanger = wormhole.movie.edu wormhole.movie.edu internet address = 192.249.249.1 wormhole.movie.edu internet address = 192.253.253.1 >set q=any-- Look up data of any type >diehardServer: terminator.movie.edu Address: 192.249.249.3 diehard.movie.edu internet address = 192.249.249.4 diehard.movie.edu MX preference = 10, mail exchanger = diehard.movie.edu diehard.movie.edu internet address = 192.249.249.4
These are only a few of the valid DNS data types, of course. For the complete list, see Appendix A.