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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 321J HD CARRIER LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
983-888 1 Denver CO   656      
983-999 1 Denver CO   656      
983-999 3 Denver CO   656      
984-884 A Raleigh NC RLGHNCHD8MD  426      
984-884 8 Raleigh NC RLGHNCHD8MD  426      
984-884 9 Raleigh NC RLGHNCHD8MD  426      
986-201 2 Caldwell ID BOISIDPZAMD  652      
986-219 A Idaho Falls ID BOISIDPZBMD  652      
986-219 8 Idaho Falls ID BOISIDPZBMD  652      
986-219 9 Idaho Falls ID BOISIDPZBMD  652      
986-800 7 Idaho Falls ID BOISIDPZAMD  652      
989-357 A Bay City MI SGNWMIACFMD  344      
989-357 9 Bay City MI SGNWMIACFMD  344      

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Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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