ITU-T Recommendations

Recommendation ITU-T E.212 defines a unique international identification plan for public fixed and mobile networks providing users with access to public telecommunication services. The ITU-T E.212 identification plan was originally developed for use in public land mobile networks (PLMNs). The plan is hierarchical and identifies geographic areas, networks and subscriptions. The main body of this Recommendation describes the pure identification plan.

Amendment 1 introduces a new Appendix III on shared ITU-T E.212 mobile country code (MCC) 999 for internal use within a private network.