Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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
223-240 9 Harrisburg City Zone-1 PA HRBGPAGU8MD  226   2020-11-22   
223-256 A Dillsburg PA HRBGPAGU9MD  226      
223-256 8 Dillsburg PA HRBGPAGU9MD  226   2021-05-29   
223-256 9 Dillsburg PA HRBGPAGU9MD  226   2021-05-29   
223-358 6 Chambersburg PA   226   2026-10-12   
223-384 3 York PA HRBGPAGU8MD  226   2026-02-20   
223-384 4 York PA HRBGPAGU8MD  226   2026-02-20   
223-387 6 Lancaster PA HRBGPAGU8MD  226   2026-06-07   
223-387 7 Lancaster PA HRBGPAGU8MD  226   2026-06-07   
224-646 2 Northbrook IL CHCGILWUVMD  358   2025-10-10   
224-664 7 Des Plaines IL CHCGILWUVMD  358   2026-03-08   
224-664 8 Des Plaines IL CHCGILWUVMD  358   2026-03-08   
224-664 9 Des Plaines IL CHCGILWUVMD  358   2026-03-08   
225-366 1 Baton Rouge LA BTRGLA12XQZ  492   2025-08-15   
225-512 A Baton Rouge LA BTRGLA12XQZ  492      
225-512 8 Baton Rouge LA BTRGLA12XQZ  492   2023-05-11   
225-512 9 Baton Rouge LA BTRGLA12XQZ  492   2023-05-11   
225-536 6 Baton Rouge LA BTRGLA12XQZ  492   2026-06-27   
225-536 7 Baton Rouge LA BTRGLA12XQZ  492   2026-06-27   
225-576 5 Baton Rouge LA BTRGLA12XQZ  492   2026-06-27   
225-576 7 Baton Rouge LA BTRGLA12XQZ  492   2026-06-27   
225-935 6 Baton Rouge LA BTRGLA12XQZ  492   2025-08-15   
227-222 7 Washington Zone 16 MD WASHDCSWNMD  236   2023-12-18   
227-244 A Ridge MD WASHDCSWNMD  236      
227-244 6 Ridge MD WASHDCSWNMD  236   2024-07-27   
227-295 5 Hagerstown MD HGTWMD53DMD  240   2026-01-26   
227-295 6 Hagerstown MD HGTWMD53DMD  240   2026-01-26   
227-295 7 Hagerstown MD HGTWMD53DMD  240   2026-01-26   
227-303 3 Washington Zone 10 MD WASHDCSWNMD  236   2026-01-18   
227-777 1 Ashton (Baltimore LATA) MD BLTMMDCHXVX  238   2023-09-30   
227-888 7 Washington Zone 15 (Baltimore LATA) MD BLTMMDCHXVX  238   2023-11-20   
227-999 7 Washington Zone 10 MD WASHDCSWNMD  236   2023-12-15   
228-279 2 Gulfport MS BILXMSAT8MD  484   2026-02-14   
228-279 3 Gulfport MS BILXMSAT8MD  484   2026-02-14   
228-279 4 Gulfport MS BILXMSAT8MD  484   2026-02-14   
228-338 A Biloxi MS BILXMSAT8MD  484      
228-338 8 Biloxi MS BILXMSAT8MD  484   2020-07-19   
228-338 9 Biloxi MS BILXMSAT8MD  484   2020-07-19   
228-609 3 Gulfport MS BILXMSAT8MD  484   2026-03-08   
228-609 4 Gulfport MS BILXMSAT8MD  484   2026-03-08   
228-609 6 Gulfport MS BILXMSAT8MD  484   2026-03-08   
231-293 A Frankfort MI BRSPMI099MD  348      
231-293 9 Frankfort MI BRSPMI099MD  348   2021-07-05   
231-442 5 Harrietta MI BRSPMI098MD  348   2025-11-03   
234-279 A Akron OH AKRNOH2533Z  325      
234-279 8 Akron OH AKRNOH2533Z  325   2020-09-25   
234-279 9 Akron OH AKRNOH2533Z  325   2020-09-25   
234-370 A Youngstown OH YNTWOH74X4X  322      
234-370 8 Youngstown OH YNTWOH74X4X  322   2023-05-11   
234-370 9 Youngstown OH YNTWOH74X4X  322   2023-05-11   

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

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