Sequential Numbering Assignment
Obligations
As a reminder, per the INDUSTRY NUMBERING COMMITTEE (INC) GUIDELINES FOR
THE ADMINISTRATION OF TELEPHONE NUMBERS:
4.0 SEQUENTIAL NUMBER ASSIGNMENT
4.1 Purpose and Scope
This section identifies SP responsibilities with respect to sequential number assignment.
A primary purpose for sequential number assignment is to improve SP efficiency in utilizing numbering resources, while maintaining SP flexibility in meeting customer demand. These guidelines address this responsibility in a manner that balances the legitimate needs of specific customer requests with the industry’s increasing need to use numbering resources more efficiently.
4.2 Definition of Sequential Number Assignment
Sequential Number Assignment is an FCC mandate which requires all SPs to first assign all available telephone numbers within an opened thousands-block before opening another thousands-block, unless the available numbers in the opened thousands-block are not sufficient to meet a customer request. This requirement shall apply to SPs’ existing numbering resources as well as any new numbering resources obtained in the future.
It follows from this definition that, under this requirement, an SP that opens a clean block prior to utilizing in its entirety a previously-opened thousands-block should be prepared to demonstrate the following exceptions to the state commission: (1) a genuine request from a customer detailing the specific need for telephone numbers; (2) the inability on the part of the SP to meet the specific customer request for telephone numbers from the surplus of numbers within the SP’s currently activated thousands-block. The above exceptions do not apply to individual vanity number requests.
Upon a finding by a state commission that an SP inappropriately assigned telephone numbers from an uncontaminated thousands-block, the NANPA or the PA shall suspend assignment or allocation of any additional numbering resources to that SP in the applicable NPA until the SP demonstrates that it does not have sufficient numbering resources to meet a specific customer request.
As a reminder, per the INDUSTRY NUMBERING COMMITTEE (INC) GUIDELINES FOR
THE ADMINISTRATION OF TELEPHONE NUMBERS:
4.0 SEQUENTIAL NUMBER ASSIGNMENT
4.1 Purpose and Scope
This section identifies SP responsibilities with respect to sequential number assignment.
A primary purpose for sequential number assignment is to improve SP efficiency in utilizing numbering resources, while maintaining SP flexibility in meeting customer demand. These guidelines address this responsibility in a manner that balances the legitimate needs of specific customer requests with the industry’s increasing need to use numbering resources more efficiently.
4.2 Definition of Sequential Number Assignment
Sequential Number Assignment is an FCC mandate which requires all SPs to first assign all available telephone numbers within an opened thousands-block before opening another thousands-block, unless the available numbers in the opened thousands-block are not sufficient to meet a customer request. This requirement shall apply to SPs’ existing numbering resources as well as any new numbering resources obtained in the future.
It follows from this definition that, under this requirement, an SP that opens a clean block prior to utilizing in its entirety a previously-opened thousands-block should be prepared to demonstrate the following exceptions to the state commission: (1) a genuine request from a customer detailing the specific need for telephone numbers; (2) the inability on the part of the SP to meet the specific customer request for telephone numbers from the surplus of numbers within the SP’s currently activated thousands-block. The above exceptions do not apply to individual vanity number requests.
Upon a finding by a state commission that an SP inappropriately assigned telephone numbers from an uncontaminated thousands-block, the NANPA or the PA shall suspend assignment or allocation of any additional numbering resources to that SP in the applicable NPA until the SP demonstrates that it does not have sufficient numbering resources to meet a specific customer request.