Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 737

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-737 A Perryville MD BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238      
667-737 7 Perryville MD BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238   2022-05-04   
667-737 8 Perryville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2022-05-07   
667-737 9 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2023-10-20   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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