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.

NPA: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-331 A Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 0 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 1 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 2 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 3 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 4 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 5 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 6 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 7 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 8 Cape Girardeau MO CPGRMOEDDSA  9533 SOUTHWESTERN BELL 520      
573-331 9 Cape Girardeau MO MNCHMOAQGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2022-08-24   

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.