Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 554

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-554 A Laurel MD WASHDCRKDS3  8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-554 0 Laurel MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-554 1 Laurel MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-554 2 Laurel MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-554 3 Laurel MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-554 4 Laurel MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-554 5 Laurel MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
240-554 6 Laurel MD   4716 PAETEC COMMUNICATIONS, INC. - MD 236   2012-06-22   
240-554 7 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-05-29   
240-554 8 Laurel MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-554 9 Laurel MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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