You can't view the IP addresses from the steps here, this is only to temporarily access them in Tag Manager, which doesn't record anything. In Tag Manager you can then attach these values to any tag you want (e.g. as described in this post), or, conversely, use this information to block certain tags from firing.

Where can you view the IP addresses collected by this code?

Regards Ben

I think it's possible, but this isn't quite the right method since the page would need to partly load (long enough to run the GTM script), and then apply some logic to redirect or block the page. It's more straightforward to just block them server-side before the site even loads. Here's one article on how to do it: https://www.hostinger.com/tutorials/htaccess/how-to-allow-or-block-visitors-from-specific-countries-using-htaccess

Are you using Google Analytics? If so you don't need to do anything at all as it's included in GA by default. Just navigate to Audience > Technology > Network to see a list of company names, and choose Secondary Dimension = Network Domain for some additional information.

Hello Ana,
I was tried the above suggestion which is about getting company name but I can't get. Please give me the clear solution to resolve this one.

The error message means you're missing the variable called 'IP Address'. Make sure you've included it as described in step 3.

Hello, thanks for reply, it says when publishing GA custom event – “Unknown variable “IP Address” found in a tag. Edit the tag and remove the reference to the unknown variable.” So i guess there is some step missing? Thank you once again, this would be very helpful.
M