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: STLSMO42DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
314-209 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-291 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-298 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-344 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-702 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-702 2 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-702 4 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-702 5 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-702 6 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-702 9 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-738 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-738 0 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-738 2 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-738 5 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-738 6 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-738 7 Ladue MO 9533 SOUTHWESTERN BELL 520      
314-739 A Ladue MO 9533 SOUTHWESTERN BELL 520      
314-770 A Ladue MO 9533 SOUTHWESTERN BELL 520      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.