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: 210 [Rate centres in NPA 210] [Dial plan for NPA 210]

NXX: 644

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
210-644 A San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566      
210-644 0 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 1 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 2 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 3 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 4 San Antonio TX SNANTXCADS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 5 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 6 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 7 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 8 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   
210-644 9 San Antonio TX SNANTXDIDS2  9533 SOUTHWESTERN BELL 566   2009-01-26   

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

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