When I open http://uk.wikimedia.org on my mobile phone I get redirected to http://uk.m.wikimedia.org . That's an invalid site url:
host uk.m.wikimedia.org
Host uk.m.wikimedia.org not found: 3(NXDOMAIN)
So I'm unable to browse this site on my phone. Other chapter sites might be affected too, but didn't test this.
Version: unspecified
Severity: normal
URL: http://uk.m.wikimedia.org