There isn't any information by default, but you could add some if you like.
Use something like
formatting.currentXMLNode.setUserString("lastPage", formatting.currentPage.pageNumber);
in the 'onExit' source for your title (better still in the onExit code of a property set associated with the title).
You can then use XPath in your ToC to retrieve that information using something like:
formatting.evaluateXPath('x3b2:get-userData("lastPage", self::refNode())');
Use that in the generated ToC elements somewhere...
setUserString() is a DOM method to add private info onto a node. The get-userData() XPath extension function is an XPath equivalent. self::refNode() is a custom location passed by nodes which are augmented onto a DOM when adding a TOC.
Simon