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X.121 : International numbering plan for public data networks  

Recommendation X.121

In force components
Number
 Title Status
X.121 (10/00)
  		International numbering plan for public data networks   In force
 
 
Superseded and Withdrawn components
Number
 Title Status
X.121 (11/88)
  		International numbering plan for public data networks   Superseded
X.121 (09/92)
  		International numbering plan for public data networks   Superseded
X.121 (10/96)
  		International numbering plan for public data networks   Superseded

 

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Updated : 2009/11/16