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How Do I Find Out My Linux Gateway / Router IP Address?

How do I find out my gateway IP for a computer or a network device that allows or controls access to another computer or network under Linux / UNIX operating systems?

A gateway is a network point that acts as an entrance to another network. On the Internet, a node or stopping point can be either a gateway node or a host (end-point) node. Both the computers of Internet users and the computers that serve pages to users are host nodes.
Tutorial details
DifficultyEasy (rss)
Root privilegesYes
Requirementsroute/netstat
Estimated completion timeLess than a minute
The computers that control traffic within your company's network or at your local Internet service provider (ISP) are gateway nodes. In the network for an enterprise, a computer server acting as a gateway node is often also acting as a proxy server and a firewall server. A gateway is often associated with both a router, which knows where to direct a given packet of data that arrives at the gateway, and a switch, which furnishes the actual path in and out of the gateway for a given packet.

Find out Gateway / router IP address under Linux / UNIX using route command

You need to use route command. This command can manipulates the kernel’s IP routing tables. It can be also use to print gateway / router IP address. Type the following command to see default gateway:
$ route -n
Output:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 ra0
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 ra0

192.168.1.1 is gateway IP address for our computer. The flag U indicates that route is up and G indicates that it is gateway. You can print gateway name, enter:
$ route
Output:

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     *               255.255.255.0   U     0      0        0 ra0
default         wrt             0.0.0.0         UG    0      0        0 ra0

Second column prints Gateway hostname / IP address. In our example wrt is gateway.

netstat command example to find out gateway/router IP

Open a terminal and type the following command:
# netstat -r -n
Sample outputs:

Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
0.0.0.0         192.168.1.254   0.0.0.0         UG        0 0          0 eth1
192.168.1.0     0.0.0.0         255.255.255.0   U         0 0          0 eth1

route and netstat command demo

Animated gif 01: Use route and netstat command to find out default gateway/router IP address on Linux

Animated gif 01: Use route and netstat command to find out default gateway/router IP address on Linux

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{ 34 comments… add one }

  • Khai Luc May 29, 2008, 7:37 pm

    The route command you mentioned helps solve my problem. Thanks!

  • bob September 26, 2008, 2:54 am

    nice one

  • Jino December 15, 2008, 8:40 am

    Thank you very much for the information……….

  • ndjock-abanda arthur March 6, 2009, 12:09 pm

    an add , if allowed :
    the command “netstat -r” could also reached the same result.

    thanks nix

  • Umesh Sonune May 22, 2009, 5:56 am

    in our college we have linux proxy server for internet, troughe is a bsnl DSL router. router ip is chenged by our administrator so, i just want to know router ip from my pc which have windows xp for direct internet acsses, can u tell me what i have to do for this? plzzzzzzzzzzz help me.

    • chetan November 1, 2012, 3:37 pm

      there is a way, use a software called colasoft capsa on your computer. It will give all the IP address in use, now try each IP address you think may be a gateway and you will get to the internet. But I just want to know which BSNL router you are using?

    • chetan November 1, 2012, 3:38 pm

      There is one more issue that if you are going through linux proxy server, it is difficult to go through it, remember it is difficult not impossible. Just you have to go 1 step ahead your administrator

  • ip address June 1, 2009, 6:32 am

    i’m working in corporate office … i want to know ip address of router even some of them told that default gateway is the ip address i telnet it but not connecting … how i have to found the ip address . send to my mail if u have the idea {snip_email_id_removed}

    • chetan November 1, 2012, 3:40 pm

      Let me clear you can not telnet each device on the network. So try ping command first
      syntex is
      ping xxx.xxx.xxx.xxx

  • Robert January 27, 2010, 12:53 am

    i tried that but it does not have anything except a (*) in the gateway column. what should I do?

  • vamsi February 26, 2010, 9:36 pm

    route -nee

  • Veljko March 25, 2010, 9:12 am

    How to find gateways of multiple intrefaces? I have two interfaces, one is default, and it’s OK, but I need gateway of second interface …

  • Subnet Ninja October 15, 2010, 12:50 pm

    For some reason, when I type the router’s IP address in a Firefox address bar, it doesn’t show up… any tips for solving this annoyance?

  • amar February 10, 2011, 11:53 am

    router -n

  • Subnet Ninja February 15, 2011, 7:43 pm

    Thanks.

  • Toshiba February 17, 2011, 3:22 am

    Hello Vivek,
    Is there a way to get version, model number and other pertinent info of Linksys router via linux? I have an ancient router with the relevant tags scratched up.
    Thanks!

    • chetan November 1, 2012, 3:32 pm

      Just open the router settings, you will get the model number and versions their

  • Luis July 2, 2011, 6:20 pm

    Thank you .

  • Md.Amanullah January 13, 2012, 11:36 am

    thanx…simple way,,,

  • uuryg February 3, 2012, 10:30 am

    Thanks

  • Kottha anusha February 9, 2012, 10:59 am

    thank you very much .Information is very needful.

  • Ahsan April 4, 2012, 5:18 am

    Access Denied Help Me PLzzzzzZZZZzzzzz

    • Matthew October 22, 2012, 4:48 pm

      Add “sudo” before it.

      • chetan November 1, 2012, 3:33 pm

        sudo cant work if user is not added in sudoers file

  • Ricardo Meleiro April 9, 2012, 3:51 pm

    Thanks for the information ! Very helpful!

  • joyce August 9, 2012, 10:05 am

    thank u so much… it was very helpful

  • Cristian September 27, 2012, 10:33 am

    THX man. learning linux now and i like it. it is so complex, so many things to learn :D

  • Zhei Kent October 3, 2012, 6:20 am

    thanks :)

  • dinesh Rao July 22, 2013, 1:19 pm

    Thanks………..

  • Walle April 2, 2014, 5:12 am

    Hi. I ve seen a couple of very helpful replies here so I was hoping to get an answer to my problem here.

    I am located in Japan and got my self an internet contract. It looks like a DSL router. Though I am not sure what I actually ordered. The usual way to establish connection is only by a CD on Windows. I am pretty sure I can somehow make that darn thing work with Ubuntu as well, I just dont know how.

    If editing a DSL connection to the Network Manager it still doesnt work. But I am not very skilled with that. There I tiped in my User data and thats it. I dont know wether of how to fill out the PPPoE or do it automatically. I also wouldnt know the addresse to fill in here.

    Then I also tried some sudo pppoe config command but that wouldnt help me either. Afterwards I would always have to get to the etc/network/interfaces file to set everything back so that it wouldnt take 10 times longer to start the laptop cause of the wrong network configurations.

    I thought to myself it could be done by accessing the router with an Windows Laptop, but I dont know my neighbours too well to borrow one. However do you think that might be a solution as well ?

    Thanks for your comments in advance

    Walle

    • jim August 6, 2014, 10:27 am

      if you plug the router in and turn it on, plug a network cable between your linux computer, it should connect just by using DHCP… The CDs ISPs give out have bloatware like anti-virus, online backup storage (never enough!), dumb wireless managers etc. A network is a netowrk, and there is no need for all the software on the CD…

  • Amit Saha September 14, 2014, 1:07 pm

    Nice description…Thanks..

  • David Dykstra May 23, 2015, 6:43 pm

    If you have curl installed you can also use:

    curl ident.me

  • Jj June 2, 2015, 2:53 pm

    Hello i dont have this ip i have just 0.0.0.0

    0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 venet0

    what is the good ip ?

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