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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OCN: 321J HD CARRIER LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
872-799 A Chicago Zone 10-Beverly IL CHCGILWUVMD  358   2025-11-07   
872-799 9 Chicago Zone 10-Beverly IL CHCGILWUVMD  358   2025-11-07   
878-230 A Pittsburgh Zone 4 PA PITBPADTXXX  234      
878-230 8 Pittsburgh Zone 4 PA PITBPADTXXX  234   2021-06-18   
878-230 9 Pittsburgh Zone 4 PA PITBPADTXXX  234   2021-06-18   
878-668 0 Enon Valley PA PITBPADTXHX  234   2017-02-27   
878-668 1 Enon Valley PA PITBPADTXHX  234   2016-05-20   
878-668 2 Enon Valley PA PITBPADTXHX  234   2016-05-20   
878-668 3 Enon Valley PA PITBPADTXHX  234   2016-05-20   
878-668 4 Enon Valley PA PITBPADTXHX  234   2016-05-20   
878-668 5 Enon Valley PA PITBPADTXHX  234   2016-05-20   
878-668 6 Enon Valley PA PITBPADTXHX  234   2016-05-20   
878-668 7 Enon Valley PA PITBPADTXHX  234   2016-05-20   
878-668 8 Enon Valley PA PITBPADTXHX  234   2016-05-20   
878-870 2 Farmington PA PITBPADTXHX  234   2016-05-24   
878-870 3 Farmington PA PITBPADTXHX  234   2016-05-24   
878-870 4 Farmington PA PITBPADTXHX  234   2016-05-24   
878-870 5 Farmington PA PITBPADTXHX  234   2016-05-24   
878-870 6 Farmington PA PITBPADTXHX  234   2016-05-24   
878-870 7 Farmington PA PITBPADTXHX  234   2016-05-24   
878-870 8 Farmington PA PITBPADTXHX  234   2016-05-24   
878-870 9 Farmington PA PITBPADTXHX  234   2016-05-24   
901-519 A Memphis TN MMPHTNMAYKX  468      
901-519 9 Memphis TN MMPHTNMAYKX  468   2020-08-08   
901-738 A Memphis TN MMPHTNMAYSX  468   2024-08-23   
901-738 8 Memphis TN MMPHTNMAYSX  468   2024-08-23   
901-738 9 Memphis TN MMPHTNMAYSX  468   2024-08-23   
901-740 3 Arlington TN MMPHTNMAYKX  468   2026-04-09   
901-740 4 Arlington TN MMPHTNMAYKX  468   2026-04-09   
901-740 5 Arlington TN MMPHTNMAYKX  468   2026-04-09   
904-643 A Jacksonville FL JCVLFLCLY2X  45204      
904-643 8 Jacksonville FL JCVLFLCLY2X  45204   2020-09-14   
904-643 9 Jacksonville FL JCVLFLCLY2X  45204   2020-09-14   
906-829 A Marquette MI MRQTMIMNXAX  342      
906-829 6 Marquette MI MRQTMIMNXAX  342   2026-01-25   
906-829 7 Marquette MI MRQTMIMNXAX  342   2026-01-25   
906-829 8 Marquette MI MRQTMIMNXAX  342   2026-01-25   
906-829 9 Marquette MI MRQTMIMNXAX  342   2026-01-25   
907-215 A Anchorage AK ANCRAKXC1MD  832      
907-215 9 Anchorage AK ANCRAKXC1MD  832   2021-11-06   
907-999 A Anchorage AK ANCRAKXC1MD  832      
907-999 0 Anchorage AK ANCRAKXC1MD  832   2024-11-09   
907-999 1 Anchorage AK ANCRAKXC1MD  832   2024-11-09   
907-999 2 Anchorage AK ANCRAKXC1MD  832   2024-11-09   
907-999 3 Anchorage AK ANCRAKXC1MD  832   2024-11-09   
907-999 4 Anchorage AK ANCRAKXC1MD  832   2024-11-09   
907-999 5 Anchorage AK ANCRAKXC1MD  832   2024-11-09   
907-999 6 Anchorage AK ANCRAKXC1MD  832   2024-11-09   
907-999 7 Anchorage AK ANCRAKXC1MD  832   2024-11-09   
907-999 8 Anchorage AK ANCRAKXC1MD  832   2024-11-09   

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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