Confluence doesn't have any reporting built in that would provide historical access information. If you have a proxy in front of Confluence, the proxy logs may have recorded access history.
Going forward, you could use user access logging to see which users accessed which URLs over a period of time. Please see: How do I get more statistics from Confluence?:
Confluence has a built-in access logging mechanism, which shows who has logged in and the URL invoked. To enable it, you need to modify a couple of configuration files and restart Confluence. The traditionally generated access log can then be analysed by one of the available access log analyser tools such as Webalizer, Google Analytics or AwStats which can generate useful statistics.
The page linked above also has some SQL queries and recommendations for plugins that could be useful.
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