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This website publishes administrative rules on their effective dates, as designated by the adopting state agencies, colleges, and universities.

Rule 4901:1-7-25 | Number optimization.


All number holding telephone companies, including wireless service providers, must adhere to the following requirements:

(A) Upon request, provide copies of all NXX code requests to the North American numbering plan administrator (NANPA) or thousands block requests to the pooling administrator to the chief of the regulatory utility services division of the rates and analysis department of the commission.

(B) Initial and growth NXX code or thousands block requests must comply with applicable federal regulation.

(C) The telephone company must obtain NXX codes from NANPA or thousands blocks from the pooling administrator only for those areas where it is certified and plans to activate service within six months. If a telephone company is unable to meet the six-month deadline for placing a code or thousands block into service by returning a part 4 form to NANPA or to the pooling administrator, then further action regarding this code or thousands block is the responsibility of the commission and the telephone company.

(D) The telephone company will adopt all current and future number resource optimization measures set forth by the federal communications commission and the commission orders.

Last updated January 9, 2024 at 9:34 AM

Supplemental Information

Authorized By: 4927.03, 4901.13
Amplifies: 4901.13, 4927.04
Five Year Review Date: 6/15/2028
Prior Effective Dates: 4/8/2003, 11/30/2007, 3/2/2013, 10/27/2017