Range,Registration Procedures,Note
1 - 8191,Registry closed,Error types
8192 - 16383,Registry closed,Doi-Specific Error types
16384 - 24575,Registry closed,Status types RESERVED
24576 - 32767,Registry closed,DOI-specific Status codes
32768 - 40959,Registry closed,Private Use
40960 - 65535,Registry closed,RESERVED