Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 299

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-299 A Annapolis MD BLTMMDCHX7Y  321J HD CARRIER LLC 238      
667-299 0 Annapolis MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2020-06-02   
667-299 1 Annapolis MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2020-06-02   
667-299 2 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-10-26   
667-299 3 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-10-26   
667-299 4 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-10-26   
667-299 5 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2024-08-15   
667-299 6 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-12-25   
667-299 7 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-12-25   
667-299 8 Annapolis MD BLTQMD013MD  939H COMMIO, LLC 238   2021-10-06   
667-299 9 Annapolis MD BLTMMDCHX7Y  321J HD CARRIER LLC 238   2020-06-01   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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