1     Scope           
 2     References 
 3     Definitions 
 4     Abbreviations and acronyms              
 5     Considerations         
 6     IMSI structure, format and assignment procedures  
        6.1     Structure and format of the IMSI          
        6.2     IMSI assignment procedures  
Annex A – Criteria and procedures for the assignment and reclamation of shared
ITU‑T E.212 mobile country codes (MCC) for networks and their
respective  mobile network codes (MNCs)     
        A.1     Introduction  
        A.2     Scope               
        A.3     Principles for assignment        
        A.4     Criteria for assignment             
        A.5     Assignment   
        A.6     Voluntary return of unused MNCs       
        A.7     Criteria for reclamation            
        A.8     Reclamation  
        A.9     Reconsideration process          
Annex B – Principles for the assignment of mobile network codes (MNCs) within
geographic MCCs     
Annex C – Procedures for the assignment of an additional MCC to a country     
Annex D – Use of mobile subscription identification number (MSIN)     
Annex E – The use of an MCC+MNC in a country other than the country to which 
the MCC has been assigned by the Director of TSB     
        E.1     Introduction  
        E.2     Procedure to be followed for implementation of the extra-territorial
use of an MCC+MNC     
        E.3     Voluntary return of an MNC   
        E.4     Criteria for cancellation of extra-territorial use               
        E.5     Cancellation procedures          
Annex F – Illustration of uses of ITU-T E.212 resources     
        F.1     Introduction  
        F.2     Mobile networks (PLMN)         
        F.3     Fixed networks (PSTN)              
        F.4     Satellite and non-terrestrial networks 
        F.5     Universal personal telecommunication (UPT)  
        F.6     Services used globally 
        F.7     Networks        
Appendix I – Form A: Notification of the use of an MCC/MNC
extra-territorially     
Appendix II – Form B: Notification of the cancellation of use of an MCC/MNC 
extra-territorially     
Bibliography