Yes, its called a linkchecker, several already exist, see http://linkchecker.sourceforge.net/, http://validator.w3.org/checklink, use head, even fake head request

In reply to Re: Fast fetching of HTML response code by Anonymous Monk
in thread Fast fetching of HTML response code by mrguy123

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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