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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Switch: PTHRMIMNDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
810-887 A Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-887 2 Port Huron MI 9323 MICHIGAN BELL TEL CO 340   2004-10-05   
810-887 3 Port Huron MI 9323 MICHIGAN BELL TEL CO 340   2004-10-05   
810-887 4 Port Huron MI 9323 MICHIGAN BELL TEL CO 340   2004-10-05   
810-887 5 Port Huron MI 9323 MICHIGAN BELL TEL CO 340   2004-10-05   
810-887 6 Port Huron MI 9323 MICHIGAN BELL TEL CO 340   2004-10-05   
810-966 A Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 0 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 1 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 2 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 3 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 4 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 5 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 7 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 8 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-966 9 Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-982 A Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-984 A Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-985 A Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-987 A Port Huron MI 9323 MICHIGAN BELL TEL CO 340      
810-989 A Port Huron MI 9323 MICHIGAN BELL TEL CO 340      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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