Hi @HariharanSubra1,
One option that has worked for me is using the X-Forwarded-For header to spoof different geo's IP addresses to QA your Target activities using geo targeting. You can find extensions for Firefox or Chrome to allow you to easily apply this header to your page requests. Here's one I've tried: https://addons.mozilla.org/en-US/firefox/addon/x-forwarded-for-injector/
Also, if you want to manually fire a request to Target via the Delivery API (same API used by at.js 2.x) you can just add the x-forwarded-for header in a curl like this:
curl 'http://rr.tt.omtrdc.net/rest/v1/delivery?client=YOURCLIENTCODE&sessionId=68fcd64a1f7844aa970001&version=2.2.0' -H 'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0' -H 'Accept: */*' -H 'Content-Type: text/plain' -H 'X-Forwarded-For: 192.223.241.21' --data '{"context":{"channel":"web","address":{"url":"http://sb.com/plain_site/page_three.html"}},"execute":{"pageLoad":{}}}'
Change the client, x-forwarded-for, session ID, and url and you can check your own test.
Hope that helps.
-Ryan