1nslookup(1M) System Administration Commands nslookup(1M)
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6 nslookup - query Internet name servers interactively
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9 nslookup [-option] [name | -] [server]
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13 The nslookup utility is a program to query Internet domain name
14 servers. It has two modes: interactive and non-interactive. Interactive
15 mode allows the user to query name servers for information about vari‐
16 ous hosts and domains or to print a list of hosts in a domain. Non-
17 interactive mode is used to print just the name and requested informa‐
18 tion for a host or domain.
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21 Interactive mode is entered in the following cases:
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23 1. No arguments are given (the default name server is used).
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25 2. The first argument is a hyphen (-) and the second argument
26 is the host name or Internet address of a name server.
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29 Non-interactive mode is used when the name or Internet address of the
30 host to be looked up is given as the first argument. The optional sec‐
31 ond argument specifies the host name or address of a name server.
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34 Options can also be specified on the command line if they precede the
35 arguments and are prefixed with a hyphen. For example, to change the
36 default query type to host information, and the initial timeout to 10
37 seconds, type:
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39 nslookup -query=hinfo -timeout=10
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44 host [server]
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46 Look up information for host using the current default server or
47 using server, if specified. If host is an Internet address and the
48 query type is A or PTR, the name of the host is returned. If host
49 is a name and does not have a trailing period, the search list is
50 used to qualify the name. To look up a host not in the current
51 domain, append a period to the name.
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54 server domain
55 lserver domain
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57 Change the default server to domain; lserver uses the initial
58 server to look up information about domain, while server uses the
59 current default server. If an authoritative answer can't be found,
60 the names of servers that might have the answer are returned.
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63 root
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65 Not implemented.
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68 finger
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70 Not implemented.
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73 ls
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75 Not implemented.
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78 view
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80 Not implemented.
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83 help
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85 Not implemented.
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88 ?
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90 Not implemented.
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93 exit
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95 Exits the program.
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98 set keyword[=value]
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100 This command is used to change state information that affects the
101 lookups. Valid keywords are:
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103 all
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105 Prints the current values of the frequently used options to
106 set. Information about the current default server and host is
107 also printed.
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110 class=value
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112 Change the query class to one of:
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114 IN
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116 the Internet class
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119 CH
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121 the Chaos class
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124 HS
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126 the Hesiod class
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129 ANY
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131 wildcard
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133 The class specifies the protocol group of the information.
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135 (Default = IN; abbreviation = cl)
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138 [no]debug
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140 Turn on or off the display of the full response packet and any
141 intermediate response packets when searching.
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143 (Default = nodebug; abbreviation = [no]deb)
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146 [no]d2
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148 Turn debugging mode on or off. This displays more about what
149 nslookup is doing.
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151 (Default = nod2)
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154 domain=name
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156 Sets the search list to name.
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159 [no]search
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161 If the lookup request contains at least one period but doesn't
162 end with a trailing period, append the domain names in the
163 domain search list to the request until an answer is received.
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165 (Default = search)
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168 port=value
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170 Change the default TCP/UDP name server port to value.
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172 (Default = 53; abbreviation = po)
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175 querytype=value
176 type=value
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178 Change the top of the information query.
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180 (Default = A; abbreviations = q, ty)
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183 [no]recurse
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185 Tell the name server to query other servers if it does not have
186 the information. (Default = recurse; abbreviation = [no]rec)
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189 retry=number
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191 Set the number of retries to number.
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194 timeout=number
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196 Change the initial timeout interval for waiting for a reply to
197 number seconds.
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200 [no]vc
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202 Always use a virtual circuit when sending requests to the
203 server.
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205 (Default = novc)
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210 /etc/resolv.conf
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212 resolver configuration file
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216 See attributes(5) for descriptions of the following attributes:
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221 ┌─────────────────────────────┬─────────────────────────────┐
222 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
223 ├─────────────────────────────┼─────────────────────────────┤
224 │Availability │SUNWbind │
225 ├─────────────────────────────┼─────────────────────────────┤
226 │Interface Stability │External │
227 └─────────────────────────────┴─────────────────────────────┘
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230 dig(1M), host(1M), named(1M), attributes(5)
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233 nslookup and dig(1M) now report "Not Implemented" as NOTIMP rather than
234 NOTIMPL. This will have impact on scripts that are looking for NOTIMPL.
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237 BIND 9 nslookup is deprecated and not as full featured as its former
238 BIND 8 version. For more features and functionality refer to dig(1M).
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242SunOS 5.11 24 Dec 2008 nslookup(1M)