▁Sign ific ant ▁over block ing ▁of ▁Internet ▁sites ▁by ▁mobile ▁operators ▁is ▁reported , ▁including ▁the ▁blocking ▁of ▁political ▁sat ire , ▁femin ism ▁and ▁gay ▁content . ▁Research ▁by ▁the ▁Open ▁Rights ▁Group ▁highlight ed ▁the ▁w ides p read ▁nature ▁of ▁un just ified ▁site ▁blocking . ▁In ▁ 2 0 1 1 ▁the ▁group ▁set ▁up ▁blocked . org . uk , ▁a ▁website ▁allowing ▁the ▁reporting ▁of ▁sites ▁and ▁services ▁that ▁are ▁' block ed ' ▁on ▁their ▁mobile ▁network . ▁The ▁website ▁received ▁hundreds ▁of ▁reports ▁of ▁the ▁blocking ▁of ▁sites ▁covering ▁blog s , ▁business , ▁internet ▁priv acy ▁and ▁internet ▁for ums ▁across ▁multiple ▁networks . ▁The ▁Open ▁Rights ▁Group ▁also ▁demonstrated ▁that ▁correct ing ▁the ▁err one ous ▁blocking ▁of ▁innoc ent ▁sites ▁can ▁be ▁difficult . ▁No ▁UK ▁mobile ▁operator ▁provides ▁an ▁on - line ▁tool ▁for ▁ident ifying ▁blocked ▁websites . ▁The ▁O 2 ▁Website ▁status ▁check er ▁was ▁available ▁until ▁the ▁end ▁of ▁ 2 0 1 3 ▁but ▁was ▁susp ended ▁in ▁December ▁after ▁it ▁had ▁been ▁widely ▁used ▁to ▁determine ▁the ▁extent ▁of ▁over block ing ▁by ▁O 2 . ▁Not ▁only ▁were ▁civil ▁libert ies ▁and ▁computing ▁sites ▁being ▁blocked , ▁but ▁also ▁Child line , ▁the ▁NS P CC ▁and ▁the ▁Police . ▁An ▁additional ▁opt - in ▁wh itel ist ▁service ▁aim ed ▁at ▁users ▁under ▁ 1 2 ▁years ▁is ▁provided ▁by ▁O 2 . ▁The ▁service ▁only ▁allows ▁access ▁to ▁websites ▁on ▁a ▁list