AMP Link Checker - Inspect AMP URL HTML Tag
AMP Page Tag inform SE about Valid Accelerated Mobile Page Content
AMP Page URL Checker tool inspect AMP Page HTML Tag of webpage. AMP Page URL is a communicating medium to Search Engine. AMP Page Tag of a web page tells Search engine about AMP Version content for Faster access and better search engine ranking.
If the current page URL and AMP Page URL are same, it means the your page is only Accelerated Mobile Pages no other version available for Search Engine Indexing.