Table of Contents - E.156 (09/2025) - Guidelines for ITU-T action on reported misuse of E.164 number resources

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Misuse of international E.164 number resources
6	Procedures to and actions on reported misuse of international E.164 number resources
	6.1	Numbering resources that have been assigned to an entity other than a Member State
	6.2	Numbering resources that have not been assigned
	6.3	Numbering resources assigned to a Member State
7	Measures available to address reported misuse of E.164 numbers
	7.1	Numbering resources that have been assigned to an entity other than a Member State
	7.2	Numbering resources that have not been assigned
	7.3	Measures available for misuse of E.164 numbering resources assigned to Member States
8	Actions available to the Director of TSB
9	Availability of misuse reports and responses
Appendix I – Examples of E.164 number resource misuse
Appendix II – Possible national actions in case of misuse of national assigned resources
Appendix III – Number resource misuse and fraud from GSMA 2018 Public policy handbook
Appendix IV – Guidelines for Member States, Administrations, operators and ROAs for dealing with number misappropriation
Bibliography