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
267-947 1 Philadelphia Suburban Zone 38 PA PHLAPAMKX7X  228   2016-09-08   
267-947 2 Philadelphia Suburban Zone 38 PA PHLAPAMKX7X  228   2016-09-08   
267-947 3 Philadelphia Suburban Zone 38 PA PHLAPAMKX7X  228   2016-09-08   
267-947 4 Philadelphia Suburban Zone 38 PA PHLAPAMKX7X  228   2016-09-08   
267-947 5 Philadelphia Suburban Zone 38 PA PHLAPAMKX7X  228   2016-09-08   
267-947 6 Philadelphia Suburban Zone 38 PA PHLAPAMKX7X  228   2016-09-08   
267-967 0 Lansdale PA PHLAPAMKX7X  228   2016-02-04   
267-967 2 Lansdale PA PHLAPAMKX7X  228   2016-02-04   
267-967 3 Lansdale PA PHLAPAMKX7X  228   2016-02-04   
267-967 4 Lansdale PA PHLAPAMKX7X  228   2016-02-04   
267-967 6 Lansdale PA PHLAPAMKX7X  228   2016-02-04   
267-967 8 Lansdale PA PHLAPAMKX7X  228   2016-02-04   
267-967 9 Lansdale PA PHLAPAMKX7X  228   2016-02-04   
269-478 4 Kalamazoo MI   348   2025-11-03   
269-757 8 Benton Harbor MI   348   2025-11-03   
270-872 2 Elizabethtown KY   462   2026-04-09   
270-990 5 Elizabethtown KY   462   2026-04-09   
272-249 A Scranton PA SCTNPA01XVX  232      
272-249 8 Scranton PA SCTNPA01XVX  232   2020-11-22   
272-249 9 Scranton PA SCTNPA01XVX  232   2020-11-22   
272-304 A Honesdale PA SCTNPA01XWX  232      
272-304 8 Honesdale PA SCTNPA01XWX  232   2022-12-26   
272-304 9 Honesdale PA SCTNPA01XWX  232   2022-12-26   
272-461 1 Williamsport PA   232   2026-02-20   
272-461 2 Williamsport PA   232   2026-02-20   
279-200 A Sacramento: Main DA CA SCRMCA0105Z  726      
279-200 9 Sacramento: Main DA CA SCRMCA0105Z  726   2019-06-10   
283-333 4 Cincinnati OH CNCNOHWSXAZ  922   2024-01-20   
283-333 5 Cincinnati OH CNCNOHWSXAZ  922   2024-01-20   
283-777 8 Waynesville OH CNCNOHWSXAZ  922   2023-12-18   
283-888 3 Hamilton OH CNCNOHWSXAZ  922   2023-11-19   
283-999 3 Little Miami OH CNCNOHWSXAZ  922   2023-12-14   
301-205 1 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-05-14   
301-205 2 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-05-14   
301-205 3 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-05-14   
301-205 4 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-05-14   
301-205 6 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-05-14   
301-205 7 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-05-14   
301-205 8 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-05-14   
301-205 9 Washington Zone 14 (Baltimore LATA) MD   238   2016-05-14   
301-307 8 Washington Zone 13 (Baltimore LATA) MD BLTMMDCHXVX  238   2020-05-01   
301-612 0 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-612 1 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-612 2 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-05-14   
301-612 3 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-612 4 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-612 5 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-612 7 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-612 8 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-612 9 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-889 1 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-889 3 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-889 4 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-889 5 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-889 6 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-889 7 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2016-09-05   
301-973 4 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  238   2020-05-02   
302-617 A Wilmington DE PHLAPAMKX7X  228      
302-617 8 Wilmington DE PHLAPAMKX7X  228   2023-11-30   
302-617 9 Wilmington DE PHLAPAMKX7X  228   2023-11-30   
302-637 6 Delaware City DE   228   2025-10-19   
302-637 7 Delaware City DE   228   2025-10-19   
303-303 A Denver CO   656      
303-303 0 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 1 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 2 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 3 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 4 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 5 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 6 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 7 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 8 Denver CO DNVRCOMA32Z  656   2024-10-27   
303-303 9 Denver CO DNVRCOMA32Z  656   2024-10-27   
304-307 9 Madison WV CHTNWVLE2MD  254   2020-11-01   
304-915 1 Charleston Zone 7 WV CHTNWVLE2MD  254   2020-11-02   
304-915 9 Charleston Zone 7 WV CHTNWVLE2MD  254   2020-11-02   
307-292 A Cheyenne WY CHYNWYRF8MD  654      
307-292 7 Cheyenne WY CHYNWYRF8MD  654   2020-11-02   
307-292 8 Cheyenne WY CHYNWYRF8MD  654   2020-11-02   
307-292 9 Cheyenne WY CHYNWYRF8MD  654   2020-08-08   
307-302 8 Cody WY CHYNWYRF8MD  654   2020-10-18   
307-449 7 Rock Springs WY   654   2025-11-21   
307-449 8 Rock Springs WY   654   2025-11-21   
307-474 5 Cody WY   654   2025-11-21   
307-474 6 Cody WY   654   2025-11-21   
307-522 2 Rock Springs WY CHYNWYRF8MD  654   2020-09-27   
309-499 3 Le Roy IL   366   2026-03-08   
309-499 5 Le Roy IL   366   2026-03-08   
309-499 7 Le Roy IL   366   2026-03-08   
309-802 A Peoria IL PEORILPJXXZ  368      
309-802 9 Peoria IL PEORILPJXXZ  368   2020-10-09   
309-880 A Ipava IL PEORILPJ01Z  368      
309-880 9 Ipava IL PEORILPJ01Z  368   2021-07-10   
309-920 A Bloomington IL BLTNILTSCMD  366      
309-920 8 Bloomington IL BLTNILTSCMD  366   2023-05-11   
309-920 9 Bloomington IL BLTNILTSCMD  366   2023-05-11   
312-473 9 Chicago Zone 01-Calumet IL   358   2025-10-11   
312-879 1 Chicago Zone 01-Canal IL   358   2025-10-11   
313-547 A Detroit Zone 5 MI SFLDMIMKDMD  340      
313-547 9 Detroit Zone 5 MI SFLDMIMKDMD  340   2021-07-24   

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Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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