Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 227 [Rate centres in NPA 227] [Dial plan for NPA 227]

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-231 A Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-03-30   
227-231 0 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-03-30   
227-231 1 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-03-30   
227-231 2 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-03-30   
227-231 3 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-03-30   
227-231 4 Washington Zone 6 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2024-06-27   
227-231 5 Washington Zone 6 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2024-06-27   
227-231 6 Washington Zone 6 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2024-06-27   
227-231 7 Washington Zone 6 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2024-06-27   
227-231 8 Washington Zone 6 MD WASHDC12NMD  490J DISH WIRELESS, LLC 236   2024-08-26   
227-231 9 Washington Zone 6 MD WASHDC12NMD  490J DISH WIRELESS, LLC 236   2024-10-25   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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