|Release date||20 November 2007 (Update)|
|Removal||1 February 2011 (Update)|
|Location(s)||Duel Arena - Tournament Area|
|Examine||Registers players for tournaments: Rank Cap 3499.|
|Infobox • Talk page|
Registrar 4 was a clerk found in the tournament area of the Duel Arena. Players with appropriate combat level and rank would be assigned to him when entering the tournament area on a tournament server. While assigned to him, they would be unable to gain any rank past 3499, and would have to move on to Registrar 5 instead after reaching that point.
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