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.

Switch: STLSMO20DSA

Remotes:

Switch Switch name Switch type
STLSMO02RS1  ST LOUIS  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
314-264 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-387 4 Ladue MO 9533 SOUTHWESTERN BELL 520   2002-05-27   
314-387 5 Ladue MO 9533 SOUTHWESTERN BELL 520   2002-05-27   
314-387 6 Ladue MO 9533 SOUTHWESTERN BELL 520   2002-05-27   
314-475 6 Ladue MO 9533 SOUTHWESTERN BELL 520   2011-10-08   
314-475 7 Ladue MO 9533 SOUTHWESTERN BELL 520   2011-10-08   
314-493 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-506 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-513 3 Ladue MO 9533 SOUTHWESTERN BELL 520   2002-06-25   
314-513 4 Ladue MO 9533 SOUTHWESTERN BELL 520   2002-06-25   
314-513 5 Ladue MO 9533 SOUTHWESTERN BELL 520   2002-06-25   
314-513 6 Ladue MO 9533 SOUTHWESTERN BELL 520   2002-06-25   
314-513 7 Ladue MO 9533 SOUTHWESTERN BELL 520   2002-06-25   
314-521 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-522 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-524 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-587 4 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-592 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-595 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-654 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-684 7 Ladue MO 9533 SOUTHWESTERN BELL 520   2008-07-31   
314-716 0 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-716 1 Ladue MO 9533 SOUTHWESTERN BELL 520      

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

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