Quick nslookup Guide

nslookup help

This is a quick note how to use nslookup.exe.

Start nslookup and check for domain

C:> nslookup
Default Server:  ns1.corp.pepsi.local
Addresse:  10.10.20.1
> thomasmaurer.ch
Default Server: ns1.corp.pepsi.local
Addresse: 10.10.20.1
 
Name:    thomasmaurer.ch
Address:  217.26.52.30
>

Change Nameserver for search querys

> server ns2.corp.pepsi.local
Default Server: ns2.corp.pepsi.local
Addresse: 10.10.20.2
>

Set a query type (ex. A,AAAA,A+AAAA,ANY,CNAME,MX,NS,PTR,SOA,SRV)

> set type=mx
> thomasmaurer.ch
Server: ns2.corp.pepsi.local
Address:  10.10.20.2
 
thomasmaurer.ch MX preference = 10, mail exchanger = mx2.mail.genotec.ch
thomasmaurer.ch MX preference = 10, mail exchanger = mx1.mail.genotec.ch
mx1.mail.genotec.ch   internet address = 217.26.49.141
mx1.mail.genotec.ch   internet address = 217.26.49.140
mx2.mail.genotec.ch   internet address = 217.26.49.139
mx1.mail.genotec.ch   internet address = 217.26.49.142
>

nslookup.exe help

Commands:   (identifiers are shown in uppercase, [] means optional)
NAME            - print info about the host/domain NAME using default server
NAME1 NAME2     - as above, but use NAME2 as server
help or ?       - print info on common commands
set OPTION      - set an option
    all                 - print options, current server and host
    [no]debug           - print debugging information
    [no]d2              - print exhaustive debugging information
    [no]defname         - append domain name to each query
    [no]recurse         - ask for recursive answer to query
    [no]search          - use domain search list
    [no]vc              - always use a virtual circuit
    domain=NAME         - set default domain name to NAME
    srchlist=N1[/N2/.../N6] - set domain to N1 and search list to N1,N2, etc.
    root=NAME           - set root server to NAME
    retry=X             - set number of retries to X
    timeout=X           - set initial time-out interval to X seconds
    type=X              - set query type (ex. A,AAAA,A+AAAA,ANY,CNAME,MX,NS,PTR,SOA,SRV)
    querytype=X         - same as type
    class=X             - set query class (ex. IN (Internet), ANY)
    [no]msxfr           - use MS fast zone transfer
    ixfrver=X           - current version to use in IXFR transfer request
server NAME     - set default server to NAME, using current default server
lserver NAME    - set default server to NAME, using initial server
root            - set current default server to the root
ls [opt] DOMAIN [> FILE] - list addresses in DOMAIN (optional: output to FILE)
    -a          -  list canonical names and aliases
    -d          -  list all records
    -t TYPE     -  list records of the given RFC record type (ex. A,CNAME,MX,NS,PTR etc.)
view FILE           - sort an 'ls' output file and view it with pg
exit            - exit the program