Hi,

I cannot find a piece of information about $subject. As help page https://www.mediawiki.org/wiki/Help:Range_blocks/IPv6 was moved from Meta to MediaWiki, it gives now a general talk instead of actual information. It says: "Like IPv4, IPv6 rangeblocks are limited by $wgBlockCIDRLimit https://www.mediawiki.org/wiki/Manual:$wgBlockCIDRLimit, which by default allows rangeblocks of up to /64 in size (before MediaWiki 1.20wmf5, which changes the default to /19)." All right, but what is the actual value for WMF wikis, and where is this information available?