Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 819C INTRADO COMMUNICATIONS, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
504-226 0 New Orleans LA NWORLAMA85Z  490   2016-09-02   
504-381 0 New Orleans LA NWORLAMA85Z  490   2019-11-30   
504-381 1 New Orleans LA NWORLAMA85Z  490   2019-11-30   
504-381 2 New Orleans LA NWORLAMA85Z  490   2019-11-30   
504-381 8 New Orleans LA NWORLAMA85Z  490   2019-11-30   
504-381 9 New Orleans LA NWORLAMA85Z  490   2019-11-30   
504-576 8 New Orleans LA NWORLAMA85Z  490   2019-10-20   
504-638 A New Orleans LA NWORLAMA85Z  490      
504-638 9 New Orleans LA NWORLAMA85Z  490      
985-214 8 Slidell LA NWORLAMA85Z  490   2016-09-04   
985-217 1 Houma LA NWORLAMA85Z  490   2014-04-25   
985-300 8 Morgan City LA NWORLAMA85Z  490   2014-04-25   
985-303 8 Houma LA NWORLAMA85Z  490   2016-09-02   
985-316 0 Thibodaux LA NWORLAMA85Z  490   2016-09-05   
985-387 9 Thibodaux LA NWORLAMA85Z  490   2014-04-25   
985-707 0 Slidell LA NWORLAMA85Z  490   2014-04-25   
985-745 8 Morgan City LA NWORLAMA85Z  490   2016-09-04   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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