Local Number Portability Best Practices

The members of the Local Number Portability Administration Working Group (LNPA WG) have created "Best Practices" for porting between and within telephony carriers. These Best Practices have not been mandated entirely, and in many cases are considered a gentleman's agreement on porting between carriers.  However, many of the Best Practices have been presented to the North American Number Council (NANC) for approval and, after NANC's approval, forwarded on to the FCC.  Several of these Best Practices are flagged with asterisks to indicate which have been endorsed by the NANC (*) and which have been adopted by the FCC(**).

The Best Practices reflect the consensus of the LNPA WG regarding the preferred processes for porting.  The LNPA WG meetings are open meetings.  Anyone attending the meetings may bring a suggested Best Practice to the LNPA WG for discussion and possible inclusion in the LNPA WG approved Best Practices.  The LNPA WG periodically reviews the Best Practices to determine whether each remains applicable to the current porting environment.  Based on these reviews, a practice may be modified or deleted.  If a Best Practice is deleted, the number of a Best Practice remains on the web site with explanation that it was deleted.

Please Note: Best Practices 0001 - 0044 were developed and agreed to by the Wireless Number Portability Operations (WNPO) team.

The following is an index of the existing LNP Best Practices. Click on the download button for more detail.


Title Date Name Document
0049 06/08/2007 Unlocking of 911 record on ports to VoIP providers Download
0048 06/08/2007 Porting of Wireline Reseller Numbers Download
0047 05/07/2007 DELETED -- LNPA-WG Position on 24 Hour Firm Order Confirmation Download
0046 05/07/2007 Intermodal Port delayed due to CSR too large Download
0045 05/07/2007 Porting prevented when NPA-NXX not open in NPAC Download
0044 12/19/2006 DELETED -- Pooled Block record discrepancies between PAS and NPAC Download
0043 11/25/2006 Reseller SPIDs for use in Alternative SPID field introduced in NANC 399 Download
0042 12/15/2008 Reclamation of ported numbers when no record that FOC was sent Download
0041 12/22/2005 Compliance to JIP Standards and Guidelines Download
0040 11/02/2005 Compliance to LRN Assignment Practices Download
0039 11/04/2014 Identification of multiple or generic, reject errors on wireline Local Service Requests (LSRs) and Wireless Port Requests (WPRs) Download
0038 05/27/2005 Use of End Users Social Security Number and Tax ID on Local Service Requests/Wireless Port Requests (*) Download
0037 06/14/2011 Use of Evidence of Authorization (* and **) Download
0036 04/07/2005 Porting Obligations (* and **) Download
0035 02/11/2005 DELETED -- Abandoned Ports Download
0034 09/08/2004 SPID Migrations Download
0033 02/02/2004 DELETED -- Best Practices Download
0032 02/03/2004 Standard industry process for removal of a “preferred carrier freeze,” e.g., port protection, to facilitate porting a telephone number Download
0031 02/02/2004 NSP Sending Create Message to NPAC Prior to Receiving Confirmation from OSP (* and **) Download
0030 02/02/2004 NPA Splits Download
0029 12/08/2003 DELETED -- ICP Hours of Operation Download
0028 10/14/2003 DELETED -- Supplemental Type 2 Usage Download
0027 07/10/2003 DELETED -- Retail Holiday Hours Download
0026 07/10/2003 DELETED -- 10-Digit Trigger Download
0025 04/07/2003 In-Vehicle Services, M2M and Telmatics Download

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