Common Tasks
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.
Looking Up Different Data Types
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:\>nslookup
Default 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 >wormhole
Server: 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 >diehard
Server: 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.
Authoritative Versus Nonauthoritative ...
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