Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 591

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-591 A Gaithersburg MD   829J PAETEC ITEL, LLC 236   2025-04-02   
301-591 0 Gaithersburg MD   829J PAETEC ITEL, LLC 236      
301-591 1 Gaithersburg MD   829J PAETEC ITEL, LLC 236      
301-591 2 Gaithersburg MD   829J PAETEC ITEL, LLC 236      
301-591 3 Gaithersburg MD   829J PAETEC ITEL, LLC 236      
301-591 4 Gaithersburg MD   829J PAETEC ITEL, LLC 236      
301-591 5 Gaithersburg MD   829J PAETEC ITEL, LLC 236      
301-591 6 Gaithersburg MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2020-04-19   
301-591 7 Gaithersburg MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-02-18   
301-591 8 Gaithersburg MD   829J PAETEC ITEL, LLC 236      
301-591 9 Gaithersburg MD   829J PAETEC ITEL, LLC 236      

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

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