IPconfig displays Windows NT/W2K/XP ip information


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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