¡ÒÃãªé NSlookup.exe

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㹤ÃÑé§áá·Õè·Ó¡ÒÃÊͺ¶ÒÁÊÓËÃѺª×èÍÃÐÂÐä¡Å ¤ÓµÍºäÁèÁÕÊÔ·¸Ôì áµèẺÊͺ¶ÒÁ·ÕèµÒÁÁÒ¤×Í nonauthoritative 㹤ÃÑé§áá·Õè queried âÎʵìÃÐÂÐä¡Å à«ÔÃì¿àÇÍÃì DNS ÀÒÂã¹à¤Ã×èͧµÔ´µèÍà«ÔÃì¿àÇÍÃì DNS ·ÕèäÁèÁÕÊÔ·¸ÔìÊÓËÃѺâ´àÁ¹¹Ñé¹ The local DNS server will then cache that information, so that subsequent queries are answered nonauthoritatively out of the local server's cache.

Querying Directly from Another Name Server

To query another name server directly, use theà«ÔÃì¿àÇÍÃì:ËÃ×Ílservercommands to switch to that name server. ¡Ãкǹ¡ÒÃlservercommand uses the local server to get the address of the server to switch to, while theà«ÔÃì¿àÇÍÃì:command uses the current default server to get the address.

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Using Nslookup.exe to Transfer Entire Zone

Nslookup can be used to transfer an entire zone by using thels¤ÓÊÑè§ This is useful to see all the hosts within a remote domain. äÇÂҡóìÊÓËÃѺ¡ÒÃlsÁÕ¤ÓÊÑè§:


Using ls with no arguments will return a list of all address and name server data. ¡Ãкǹ¡ÒÃ-¡ÒÃswitch will return alias and canonical names,-Çwill return all data, and-twill filter by type.

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Zone transfers can be blocked at the DNS server so that only authorized addresses or networks can perform this function. The following error will be returned if zone security has been set:

ÊÓËÃѺ¢éÍÁÙÅà¾ÔèÁàµÔÁ ´Ùº·¤ÇÒÁµèÍ仹ÕéËÃ×ͺ·¤ÇÒÁã¹°Ò¹¤ÇÒÁÃÙé¢Í§ Microsoft:

Troubleshooting Nslookup.exe

Default Server Timed Out

When starting the Nslookup.exe utility, the following errors may occur:

ËÁÒÂà˵Ø::w.x.y.zis the first DNS server listed in the DNS Service Search Order list.


The first error indicates that the DNS server cannot be reached or the service is not running on that computer. To correct this problem, either start the DNS service on that server or check for possible connectivity problems.

The second error indicates that no servers have been defined in the DNS Service Search Order list. To correct this problem, add the IP address of a valid DNS server to this list.

ÊÓËÃѺ¢éÍÁÙÅà¾ÔèÁàµÔÁ ´Ùº·¤ÇÒÁµèÍ仹ÕéËÃ×ͺ·¤ÇÒÁã¹°Ò¹¤ÇÒÁÃÙé¢Í§ Microsoft:

Can't Find Server Name when Starting Nslookup.exe

When starting the Nslookup.exe utility, the following error may occur:



This error occurs when there is no PTR record for the name server's IP address. When Nslookup.exe starts, it does a reverse lookup to get the name of the default server. If no PTR data exists, this error message is returned. To correct make sure that a reverse lookup zone exists and contains PTR records for the name servers.

ÊÓËÃѺ¢éÍÁÙÅà¾ÔèÁàµÔÁ ´Ùº·¤ÇÒÁµèÍ仹ÕéËÃ×ͺ·¤ÇÒÁã¹°Ò¹¤ÇÒÁÃÙé¢Í§ Microsoft:

Nslookup on Child Domain Fails

When querying or doing a zone transfer on a child domain, Nslookup may return the following errors:



In DNS Manager, a new domain can be added under the primary zone, thus creating a child domain. Creating a child domain this way does not create a separate db file for the domain, thus querying that domain or running a zone transfer on it will produce the above errors. Running a zone transfer on the parent domain will list data for both the parent and child domains. To work around this problem, create a new primary zone on the DNS server for the child domain.