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: 660 [Rate centres in NPA 660] [Dial plan for NPA 660]

NXX: 744

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-744 A Rock Port MO RCPTMOXADS0  1942 ROCK PORT TEL. CO. 524      
660-744 0 Rock Port MO   1942 ROCK PORT TEL. CO. 524      
660-744 1 Rock Port MO   1942 ROCK PORT TEL. CO. 524      
660-744 2 Rock Port MO   1942 ROCK PORT TEL. CO. 524      
660-744 3 Rock Port MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 524      
660-744 4 Rock Port MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 524      
660-744 5 Rock Port MO   1942 ROCK PORT TEL. CO. 524      
660-744 6 Rock Port MO   1942 ROCK PORT TEL. CO. 524      
660-744 7 Rock Port MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 524      
660-744 8 Rock Port MO   1942 ROCK PORT TEL. CO. 524      
660-744 9 Rock Port MO   1942 ROCK PORT TEL. CO. 524      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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