Check Status of IOUs 
For more information, you can call the State Controller's toll-free registered warrants assistance phone line at 1-866-267-4255. More information about redeeming registered warrants is available on the State Treasurer’s Web site at www.treasurer.ca.gov, and from the Treasurer’s registered warrants toll-free phone help line at 1-888-864-2762.  

 
  
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