ing ▁DNS ▁of ▁domains ▁subject ▁to ▁blocking ▁orders ▁to ▁produce ▁a ▁list ▁of ▁IP s ▁to ▁block . ▁ ▁The ▁Open ▁Rights ▁Group ▁has ▁proposed ▁adding ▁the ▁new ▁HTTP ▁status ▁code ▁' 4 5 1 ' ▁to ▁help ▁stream line ▁and ▁add ▁trans par ency ▁to ▁the ▁process ▁of ▁determ ining ▁when ▁a ▁site ▁is ▁blocked . ▁ ▁Active ▁program mes ▁ ▁Copy right ▁ ▁Court - ordered ▁blocks ▁It ▁is ▁an ▁established ▁procedure ▁in ▁the ▁UK ▁for ▁rights - hold ers ▁to ▁use ▁' Section ▁ 9 7 ' ▁court ▁orders ▁to ▁require ▁I SP s ▁to ▁block ▁copy right - in fr ing ing ▁sites . ▁For ▁instance , ▁court ▁orders ▁obtained ▁by ▁the ▁B PI ▁in ▁October ▁ 2 0 1 3 ▁resulted ▁in ▁the ▁blocking ▁of ▁ 2 1 ▁file - sh aring ▁sites ▁including ▁Files Tube ▁and ▁Tor rent z . ▁There ▁is ▁a ▁private ▁agreement ▁in ▁principle ▁between ▁leading ▁I SP s ▁and ▁rights ▁hold ers , ▁made ▁with ▁encourag ement ▁from ▁government , ▁to ▁quickly ▁restrict ▁access ▁to ▁websites ▁when ▁presented ▁with ▁court ▁orders . ▁The ▁court ▁orders ▁are ▁not ▁made ▁public ▁and ▁" over block ing " ▁is ▁sometimes ▁reported , ▁such ▁as ▁the ▁accident al ▁blocking ▁of ▁the ▁Radio ▁Times , ▁Cry stal ▁Palace ▁F . C ., ▁Taylor ▁Swift ▁and ▁over ▁ 1 0 0 ▁other ▁websites ▁in ▁August ▁ 2 0 1 3 . ▁ ▁The ▁practice ▁origin ated ▁as ▁a ▁result ▁of ▁a ▁court ▁order ▁applied ▁against ▁an ▁inc idence ▁of