NANPA Planning Letter 400 - Arkansas - NPA 327 to Overlay NPA 870

An all services overlay to implement NPA 327 as the relief method for the existing 870 NPA was approved by the Arkansas Public Service Commission on 12/11/09. Both NPAs will serve the northern, eastern and southern portion of Arkansas. The overlay timeline was identified as:
~ 04/21/12 -- 13-Month Timeline Begins
~ 10/20/12 -- Permissive 10-Digit Dialing Starts
~ 11/18/12 -- Earliest Date to Order Central Office Codes for New 327 NPA
~ 04/20/13 -- Permissive Dialing Ends / Mandatory 10-Digit Dialing Begins
~ 05/18/13 -- Earliest Date for New NPA Central Office Code Activation / Effective Date for New 327 NPA

Effective 4/20/13 (mandatory 10-digit dialing), the dialing plan for 870 and 327 NPAs will be as follows:
~ Local Home NPA (HNPA) or Foreign NPA (FNPA) Call … 10-Digits (NPA-NXX-XXXX)
~ Toll HNPA or FNPA Call … 1+ 10-Digits (1+ NPA-NXX-XXXX)
~ Operator Services HNPA or FNPA Call … 0+ 10-Digits (0+ NPA-NXX-XXXX)

While 10-digit dialing is encouraged during the permissive period, subscribers may use either seven- or 10-digit calling in the overlay area during this time. And, it is always good practice for carriers to prepare their switches for 10-digits well in advance of the mandatory dialing conversion date. Additionally, international and domestic carriers should ensure the new 327 NPA has been activated network-wide prior to 5/18/13. (Test numbers for routing verification to the new 327 NPA will be in effect 2/16/13 – 7/20/13 and are: 327-639-8378 for LATA 528; 327-327-1327 for LATA 530.)

For additional information, visit http://www.nanpa.com/.