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: 260

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-260 A Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2025-01-11   
227-260 0 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2025-01-11   
227-260 1 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2025-03-09   
227-260 2 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2025-04-06   
227-260 3 Washington Zone 15 (Baltimore LATA) MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2026-08-23   
227-260 7 Washington Zone 15 (Baltimore LATA) MD BLTMMDCHX7X  073H TELNYX LLC 238   2025-07-12   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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