Welcome to the Q&A Forum

I'm analyzing inbound links for a site and I was wondering if there is a way to see how many of the links were created in a certain time period? Example how many inbound links were sent to this sub domain during the past 6 months? I would think there would be a fairly simple way to do this, but not sure. Any help is greatly appreciated.

I'm getting a lot of Crawl Errors due to duplicate content and duplicate title because of category and tag posts in WordPress. I rebuilt the sitemap and said to exclude category and tags, should that clear up the issue? I've also went through and did NO INDEX and NO FOLLOW for all categories and posts. Any thoughts on this issue?