ipconfig command

To communicate via the network, TCP/IP configuration must be correct. ipconfig command is used to verify the TCP/IP configuration of a Windows PC. ipconfig command is used from the command prompt.

Windows ipconfig

C:\>ipconfig

C:\Windows\System32>ipconfig

Windows IP Configuration


Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . : lan
   IPv6 Address. . . . . . . . . . . : fd02:3193:589:0:fc35:7f70:af41:4e3d
   Temporary IPv6 Address. . . . . . : fd02:3193:589:0:3d02:d18d:348b:5b42
   Link-local IPv6 Address . . . . . : fe80::e3be:e39b:c799:e58f%11
   IPv4 Address. . . . . . . . . . . : 192.168.1.215
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.1.1
-- omitted --

The ipconfig command displays the TCP/IP configuration for each network adapter (network interface). If no options are specified, only basic information such as IP address/subnet mask and default gateway will be displayed.

For notebook PCs that have not only a wired LAN but also a wireless LAN, the TCP/IP configuration of the wireless LAN will also be displayed. Also, since IPv6 is enabled by default on Windows 10, information on the IPv6 virtual tunnel interface will also be displayed.

ipconfig command options

The ipconfig command has a variety of options.

ipconfig command optionsmeaning
/allDisplay detailed configuration information
/releaseRelease DHCP-assigned configurations
/renewGet configuration information again via DHCP
/displaydns Display DNS cache information
Table ipconfig command options

ipconfig /all

Running the ipconfig command with “/all” will display detailed configuration information: not only the IP address, but also the MAC address and the IP address of the DNS server.

C:\Windows\System32>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : ARKHIVE
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : lan

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . : lan
   Description . . . . . . . . . . . : Realtek Gaming 2.5GbE Family Controller
   Physical Address. . . . . . . . . : 50-EB-F6-B4-25-85
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : fd02:3193:589:0:fc35:7f70:af41:4e3d(Preferred)
   Temporary IPv6 Address. . . . . . : fd02:3193:589:0:3d02:d18d:348b:5b42(Preferred)
   Link-local IPv6 Address . . . . . : fe80::e3be:e39b:c799:e58f%11(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.1.215(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 2023年2月26日 2:05:19
   Lease Expires . . . . . . . . . . : 2023年3月8日 7:20:33
   Default Gateway . . . . . . . . . : 192.168.1.1
   DHCP Server . . . . . . . . . . . : 192.168.1.1
   DHCPv6 IAID . . . . . . . . . . . : 105966582
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-2A-BE-BB-22-50-EB-F6-B4-25-85
   DNS Servers . . . . . . . . . . . : 192.168.1.1
   NetBIOS over Tcpip. . . . . . . . : Enabled
-- omitted --

ipconfig /release and ipconfig /renew

/release” and “/renew” are used when DHCP client. Executing the ipconfig command with “/release” will release configuration information such as IP address obtained by DHCP. The “/renew” command retrieves the configuration information again by DHCP.

C:\Windows\System32>ipconfig /release

Windows IP Configuration

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . :
   IPv6 Address. . . . . . . . . . . : fd02:3193:589:0:fc35:7f70:af41:4e3d
   Temporary IPv6 Address. . . . . . : fd02:3193:589:0:3d02:d18d:348b:5b42
   Link-local IPv6 Address . . . . . : fe80::e3be:e39b:c799:e58f%11
   Default Gateway . . . . . . . . . :
-- omitted --

C:\Windows\System32>ipconfig /renew

Windows IP Configuration

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . : lan
   IPv6 Address. . . . . . . . . . . : fd02:3193:589:0:fc35:7f70:af41:4e3d
   Temporary IPv6 Address. . . . . . : fd02:3193:589:0:3d02:d18d:348b:5b42
   Link-local IPv6 Address . . . . . : fe80::e3be:e39b:c799:e58f%11
   IPv4 Address. . . . . . . . . . . : 192.168.1.215
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.1.1
-- omitted --

ipconfig /displaydns

Running the ipconfig command with the option “/displaydns” will display the DNS name resolution cache.

C:\Windows\System32>ipconfig /displaydns

Windows IP Configuration

    analytics43.techsmith.com
    ----------------------------------------
    Record Name . . . . . : analytics43.techsmith.com
    Record Type . . . . . : 5
    Time To Live  . . . . : 1557
    Data Length . . . . . : 8
    Section . . . . . . . : Answer
    CNAME Record  . . . . : 06301.tbnet1.com


    Record Name . . . . . : 06301.tbnet1.com
    Record Type . . . . . : 1
    Time To Live  . . . . : 1557
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 67.227.186.229


    Record Name . . . . . : 06301.tbnet1.com
    Record Type . . . . . : 1
    Time To Live  . . . . : 1557
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 72.52.161.233


    gateway.discord.gg
    ----------------------------------------
    Record Name . . . . . : gateway.discord.gg
    Record Type . . . . . : 1
    Time To Live  . . . . : 90
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 162.159.130.234


    Record Name . . . . . : gateway.discord.gg
    Record Type . . . . . : 1
    Time To Live  . . . . : 90
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 162.159.134.234


    Record Name . . . . . : gateway.discord.gg
    Record Type . . . . . : 1
    Time To Live  . . . . : 90
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 162.159.135.234


    Record Name . . . . . : gateway.discord.gg
    Record Type . . . . . : 1
    Time To Live  . . . . : 90
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 162.159.133.234


    Record Name . . . . . : gateway.discord.gg
    Record Type . . . . . : 1
    Time To Live  . . . . : 90
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 162.159.136.234

-- omitted --

Related article

Please see the following article about verifying TCP/IP configuration on Linux (Ubuntu).

N-Study
Commands to Verify TCP/IP Configuration On Linux (Ubuntu) | N-Study
https://www.n-study.com/en/tcp-ip/linux-tcpip-configuration/
This section describes commands to verify IP address/subnet mask, default gateway, and DNS server IP addresses on Linux(Ubuntu).

TCP/IP