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Windows 7: How to find out from computer the public (!) IP4 address of router?

25 Feb 2018   #1

win7pro 64bit
How to find out from computer the public (!) IP4 address of router?

Assume I connect from my Win7 computer to the router which in turn is connected to the Internet provider servers.

Now the inhouse LAN assigns the IP4s depending of the local DHCP-server. Ok.

But I am NOT interested in these IP4s but on the public IP4 address which is assigned to the router from the Internet provider.

Yes, this IP can be seen in the routers GUI.

But I wonder if this IP can be retrieved from the computer behind the router as well.

How can I find it out?

Again: I am not talking about the routers IP similar to but the outside IP.

If possible a web page URL of public info service or cmdline command in CmdPrompt is preferred.


My System SpecsSystem Spec
25 Feb 2018   #2

Windows 10 Pro x64 x3, Ubuntu

Your external Wan IP is visible to the whole of the internet, Potentially. However unless you have a URL assigned to it it is not easy to find - This is by design as it gives you the basic anonymity we normally require to prevent anyone bombarding you with unwanted data.

Just as the internal LAN IP is normally allocated by the router on a first come first served basis by the DHCP server in the router, the external IP is allocated by a similar server at the ISP so it will vary over time, how long depends on how often you switch off the router and what update cycle the ISP uses it could be hourly, daily, weekly or even never, but is likely to be shorter not longer.

There are a number of local tools that will interrogate the router and find your current internal and external IP for you, some free and some not, but the router route, (did I just type that?), is the easiest.

If you ever want to run a website from your local system you can do this but would need to talk to your ISP to get a fixed IP address and you would also need to set-up things on the world wide authorities to associate your external IP with a URL that you own ( nothing is really free ), One other system is available - you can sign up with a company that will allocate you a URL, and monitor your actual current IP (via a small app in the system tray) and route any requests to the
URL to your system, do a search for "dyn" for some info on one such
My System SpecsSystem Spec
25 Feb 2018   #3

win 8 32 bit

Just Google what's my IP that tells you
My System SpecsSystem Spec


 How to find out from computer the public (!) IP4 address of router?

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