Checking 404 status of all URLs in a Column

I have pasted around 500-600 URls in a column and I want to know 404 statuses of all the URLs in the Next Column or in “view Blocks” (want to know which URLs are live and which are not). I am not so good at scripting. Can You Please help?

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I am also interested in something like this. For example, my column is named textarea-address I would like for the script to check all the URLs that are inserted in that column