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: STLSMOGZSMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
314-888 7 Ladue MO 145J TERRA NOVA TELECOM INC. 520      
557-999 A Sappington MO 733J WIRETAP TELECOM, LLC. 520      
557-999 7 Sappington MO 733J WIRETAP TELECOM, LLC. 520      
573-333 8 Caruthersville MO 145J TERRA NOVA TELECOM INC. 520      
636-648 3 Portage des Sioux MO 145J TERRA NOVA TELECOM INC. 520      
636-933 7 Festus-Crystal City MO 145J TERRA NOVA TELECOM INC. 520      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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