IPconfig displays Windows NT/W2K/XP ip information

by Wayne Maples [Published on 20 April 2004 / Last Updated on 20 April 2004]

To find out what your ip address is, at the command line type:

ipconfig

You will see the default display: your ip address, network mask and gateway address for your nic card and ras modem. Win9x had a nice gui version, winipcfg, but Microsoft did not include it in the Windows NT / Windows 2000 / Windows XP line. Instead you must use the command line ipconfig . To get all the options for ipconfig, at the commandline, type:

ipconfig /?


USAGE:
    ipconfig [/? | /all | /renew [adapter] | /release [adapter] |
              /flushdns | /displaydns | /registerdns |
              /showclassid adapter |
              /setclassid adapter [classid] ]

where
    adapter         Connection name 
                   (wildcard characters * and ? allowed, see examples)

    Options:
       /?           Display this help message
       /all         Display full configuration information.
       /release     Release the IP address for the specified adapter.
       /renew       Renew the IP address for the specified adapter.
       /flushdns    Purges the DNS Resolver cache.
       /registerdns Refreshes all DHCP leases and re-registers DNS names
       /displaydns  Display the contents of the DNS Resolver Cache.
       /showclassid Displays all the dhcp class IDs allowed for adapter.
       /setclassid  Modifies the dhcp class id.  

The default is to display only the IP address, subnet mask and
default gateway for each adapter bound to TCP/IP.

For Release and Renew, if no adapter name is specified, then the IP address
leases for all adapters bound to TCP/IP will be released or renewed.

For Setclassid, if no ClassId is specified, then the ClassId is removed.

Examples:
    > ipconfig                   ... Show information.
    > ipconfig /all              ... Show detailed information
    > ipconfig /renew            ... renew all adapters
    > ipconfig /renew EL*        ... renew any connection that has its 
                                     name starting with EL
    > ipconfig /release *Con*    ... release all matching connections,
                                     eg. "Local Area Connection 1" or
                                         "Local Area Connection 2"
IP Refresh - Ipconfig and DHCP Client diagnostic Tool is a commercial utility with support for more complex situations.

A winipcfg-like command, wntipcfg.exe is in the netmgmt.cab file of the Windows 2000 server Resource Kit.

The results of issuing the ipconfig /displaydns on my home Windows 2000 box:



Windows IP Configuration

 www.techrepublic.com
 ----------------------------------------
 Record Name . . . . . : www.techrepublic.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 1834
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 208.50.157.239


 Record Name . . . . . : techrepublic.com
 Record Type . . . . . : 2
 Time To Live  . . . . : 1834
 Data Length . . . . . : 4
 Section . . . . . . . : Authority
 NS Record   . . . . . : DNS-SNV.techrepublic.com


 Record Name . . . . . : techrepublic.com
 Record Type . . . . . : 2
 Time To Live  . . . . : 1834
 Data Length . . . . . : 4
 Section . . . . . . . : Authority
 NS Record   . . . . . : DNS-LOU.techrepublic.com


 Record Name . . . . . : techrepublic.com
 Record Type . . . . . : 2
 Time To Live  . . . . : 1834
 Data Length . . . . . : 4
 Section . . . . . . . : Authority
 NS Record   . . . . . : DNS-BTF.techrepublic.com


 Record Name . . . . . : DNS-SNV.techrepublic.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 1834
 Data Length . . . . . : 4
 Section . . . . . . . : Additional
 A (Host) Record . . . : 208.50.157.213


 Record Name . . . . . : DNS-LOU.techrepublic.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 1834
 Data Length . . . . . : 4
 Section . . . . . . . : Additional
 A (Host) Record . . . : 12.43.21.240


 Record Name . . . . . : DNS-BTF.techrepublic.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 1834
 Data Length . . . . . : 4
 Section . . . . . . . : Additional
 A (Host) Record . . . : 12.43.21.13


 ns1.canuck.gen.nz
 ----------------------------------------
 Record Name . . . . . : ns1.canuck.gen.nz
 Record Type . . . . . : 1
 Time To Live  . . . . : 2145
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 206.40.46.70


 ns1.realnames.com
 ----------------------------------------
 Record Name . . . . . : ns1.realnames.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 80038
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 216.86.229.5


 ns2.sourcefire.com
 ----------------------------------------
 Record Name . . . . . : ns2.sourcefire.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 44872
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 151.196.107.165


 hobbes.auburn.net
 ----------------------------------------
 Record Name . . . . . : hobbes.auburn.net
 Record Type . . . . . : 1
 Time To Live  . . . . : 35205
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 209.16.236.10


 dns2.dc.msft.net
 ----------------------------------------
 Record Name . . . . . : DNS2.DC.MSFT.NET
 Record Type . . . . . : 1
 Time To Live  . . . . : 23278
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 207.68.128.152


 nsjersey.realnames.com
 ----------------------------------------
 Record Name . . . . . : nsjersey.realnames.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 79515
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 209.185.190.204


 ns7.flycast.com
 ----------------------------------------
 Record Name . . . . . : ns7.flycast.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 12469
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 216.52.6.21


 ns3.europe.yahoo.com
 ----------------------------------------
 Record Name . . . . . : ns3.europe.yahoo.com
 Record Type . . . . . : 1
 Time To Live  . . . . : 9861
 Data Length . . . . . : 4
 Section . . . . . . . : Answer
 A (Host) Record . . . : 217.12.4.71


 ze.akadns.net
 ----------------------------------------
 Section . . . . . . . : Answer
 A (Host) Record . . . : 12.47.217.11


 Section . . . . . . . : Answer

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