Per ATIS-0300119, Thousands-Block (NPA-NXX-X) & Central Office Code (NPA-NXX) Administration Guidelines (TBCOCAG), Section 4.4., directs SPs to "submit their NRUF to the NANPA on a semi-annual basis on or before February 1 for the period ending December 31 and on or before August 1 for the period ending on June 30 of each year.  Additionally, under these same semi-annual reporting deadlines, SPs shall submit to the NANPA the Appendix 3." 

If you do not have a forecast on file at the time you are submitting a request for pooled resources, you must submit a thousands-block forecast prior to submitting your request.