Unique Porting Code

Porting Authorisation Code (PAC) is a unique identifier (normally 9 characters long and in the format "ABC123456") used by some mobile network operators to facilitate mobile number portability (MNP). This allows users to retain their mobile telephone number when switching operators.

Telecommunications service is regulated in the UK by Ofcom. On 25 July 2003, Ofcom introduced the General Conditions of Entitlement which apply to all communications networks and service providers in the UK. Several amendments to this original document have been issued since this time

Condition 18 requires all providers to provide number portability but only to subscribers of publicly available telephone services who request it. Number portability must be provided as soon as practicable and on reasonable terms to subscribers and bilateral porting arrangements between providers must accord with agreed processes.

Some mobile phone companies can charge a fee to move the customer's number. This is usually no more than £25. The provider must issue a PAC within 2 hours of the port-out request, if such request was made over the phone for fewer than 25 numbers on a single account. Customer debt is not a valid reason for a service provider to refuse issuing of a PAC. Service providers may not treat PAC requests as requests to terminate service. Pay-as-you-go customers will lose any unused credit when switching service providers.

In India, the rules for Number portability are prescribed by the Telecom Regulatory Authority of India.

In India Porting Authorisation Code is to be called as 'Unique Porting Code (UPC)'.

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