Can we create a [[:Special:RecentBlockExpiration]] page listing all the blocks that have recently expired? It would be useful to check back on problematic users, IPs and IP ranges, to see if their editing behavior is still disruptive. It would help to alert us when a long-term block expires. It would not be necessary to show blocks that were removed by administrator action. Each entry should include a link to the contributions of the user, IP or range.
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Description
Event Timeline
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The page would be even more useful if it could convey at a glance whether there has been any post-block activity by the user, IP or IP range.
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Thinking some more about this, it makes sense to list previously blocked IPs, ranges and users only if they have resumed editing. If they have not resumed editing, they are not any kind of problem.
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I would be interested in building a tool for this in case there is some hesitation to do the job on Mediawiki.