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
412-410 4 Pittsburgh Zone 1 PA PITBPADTXHX  234   2016-05-20   
412-410 5 Pittsburgh Zone 1 PA PITBPADTXHX  234   2016-05-20   
412-410 6 Pittsburgh Zone 1 PA PITBPADTXHX  234   2016-05-20   
412-410 8 Pittsburgh Zone 1 PA PITBPADTXHX  234   2016-05-20   
412-410 9 Pittsburgh Zone 1 PA PITBPADTXHX  234   2016-05-20   
412-662 1 Pittsburgh Suburban Zone 22 PA PITBPADTXHX  234   2016-05-20   
412-662 2 Pittsburgh Suburban Zone 22 PA PITBPADTXHX  234   2016-05-20   
412-662 3 Pittsburgh Suburban Zone 22 PA PITBPADTXHX  234   2016-05-20   
412-662 4 Pittsburgh Suburban Zone 22 PA PITBPADTXHX  234   2016-05-20   
412-662 5 Pittsburgh Suburban Zone 22 PA PITBPADTXHX  234   2016-05-20   
412-662 6 Pittsburgh Suburban Zone 22 PA PITBPADTXHX  234   2016-05-20   
412-662 7 Pittsburgh Suburban Zone 22 PA PITBPADTXHX  234   2016-05-20   
412-662 8 Pittsburgh Suburban Zone 22 PA PITBPADTXHX  234   2016-05-20   
412-844 A Pittsburgh Zone 8 PA PITBPADTXHX  234      
412-844 9 Pittsburgh Zone 8 PA PITBPADTXHX  234   2019-05-16   
413-288 A Springfield MA SPFDMAOI9MD  126      
413-288 8 Springfield MA SPFDMAOI9MD  126   2023-05-11   
413-288 9 Springfield MA SPFDMAOI9MD  126   2023-05-11   
413-421 2 Holyoke MA SPFDMAOI9MD  126   2025-11-28   
413-421 3 Holyoke MA SPFDMAOI9MD  126   2025-11-28   
413-421 4 Holyoke MA SPFDMAOI9MD  126   2025-11-28   
413-524 A Springfield MA SPFDMAOI9MD  126   2025-11-22   
413-524 3 Springfield MA SPFDMAOI9MD  126   2025-11-22   
413-524 4 Springfield MA SPFDMAOI9MD  126   2025-11-22   
413-601 A Pittsfield MA SPFDMAOI9MD  126      
413-601 1 Pittsfield MA SPFDMAOI9MD  126   2025-11-28   
413-601 2 Pittsfield MA SPFDMAOI9MD  126   2025-11-28   
413-601 3 Pittsfield MA SPFDMAOI9MD  126   2025-11-28   
413-602 2 Springfield MA SPFDMAOI9MD  126   2026-03-20   
413-602 3 Springfield MA SPFDMAOI9MD  126   2026-03-20   
414-261 A Milwaukee Zone 1 WI MILWWIAU07Z  356      
414-261 9 Milwaukee Zone 1 WI MILWWIAU07Z  356   2020-11-23   
414-300 4 Milwaukee Zone 1 WI MILWWIAU07Z  356   2025-08-10   
414-300 5 Milwaukee Zone 1 WI MILWWIAU07Z  356   2025-08-10   
415-214 6 San Francisco: Central DA CA SNFCCA21XOZ  722   2026-06-01   
415-417 6 San Francisco: Central DA CA SNFCCA21XOZ  722   2026-06-01   
415-908 5 San Francisco: Central DA CA SNFCCA21XOZ  722   2026-06-01   
415-909 1 San Francisco: Juniper DA CA SNFCCA21XOZ  722   2016-06-09   
415-909 2 San Francisco: Juniper DA CA SNFCCA21XOZ  722   2016-06-09   
415-909 6 San Francisco: Juniper DA CA SNFCCA21XOZ  722   2016-06-28   
417-604 A Springfield MO SPFDMOMCXVX  522      
417-604 8 Springfield MO SPFDMOMCXVX  522   2023-05-11   
417-604 9 Springfield MO SPFDMOMCXVX  522   2023-05-11   
417-618 6 Springfield MO SPFDMOMCXVX  522   2025-11-14   
417-618 7 Springfield MO SPFDMOMCXVX  522   2025-11-14   
423-993 A Chattanooga TN CHTGTNNS07Z  472   2026-01-22   
423-993 6 Chattanooga TN CHTGTNNS07Z  472   2026-01-22   
423-993 7 Chattanooga TN CHTGTNNS07Z  472   2026-01-22   
423-993 8 Chattanooga TN CHTGTNNS07Z  472   2026-01-22   
423-993 9 Chattanooga TN CHTGTNNS07Z  472   2026-01-22   
423-995 A Johnson City TN JHCYTNXCX6Z  956   2026-01-22   
423-995 6 Johnson City TN JHCYTNXCX6Z  956   2026-01-22   
423-995 7 Johnson City TN JHCYTNXCX6Z  956   2026-01-22   
423-995 8 Johnson City TN JHCYTNXCX6Z  956   2026-01-22   
423-995 9 Johnson City TN JHCYTNXCX6Z  956   2026-01-22   
424-304 3 Redondo CA LSANCARCY1X  730   2016-06-02   
424-304 5 Redondo CA LSANCARCY1X  730   2016-06-02   
424-304 6 Redondo CA LSANCARCY1X  730   2016-06-02   
424-304 7 Redondo CA LSANCARCY1X  730   2016-06-02   
424-304 8 Redondo CA LSANCARCY1X  730   2016-06-02   
424-304 9 Redondo CA LSANCARCY1X  730   2016-08-27   
424-350 2 Redondo CA LSANCARCY1X  730   2016-08-27   
424-359 4 Beverly Hills CA LSANCARCY1X  730   2016-06-02   
424-359 5 Beverly Hills CA LSANCARCY1X  730   2016-06-02   
424-359 6 Beverly Hills CA LSANCARCY1X  730   2016-06-02   
424-359 7 Beverly Hills CA LSANCARCY1X  730   2016-06-02   
424-359 8 Beverly Hills CA LSANCARCY1X  730   2016-06-02   
424-365 5 West Los Angeles CA LSANCARCY1X  730   2014-08-16   
424-452 3 Redondo CA LSANCARCY1X  730   2016-08-27   
424-452 4 Redondo CA LSANCARCY1X  730   2016-08-27   
424-452 5 Redondo CA LSANCARCY1X  730   2016-08-27   
424-472 2 Beverly Hills CA LSANCARCY1X  730   2026-05-15   
424-472 3 Beverly Hills CA LSANCARCY1X  730   2026-05-15   
424-550 4 Beverly Hills CA LSANCARCY1X  730   2026-05-15   
424-561 4 Redondo CA LSANCARCY1X  730   2026-05-15   
424-561 5 Redondo CA LSANCARCY1X  730   2026-05-15   
424-561 6 Redondo CA LSANCARCY1X  730   2026-05-15   
425-225 0 Silver Lake WA STTLWAWB18Z  674   2016-09-11   
425-225 9 Silver Lake WA STTLWAWB18Z  674   2016-09-11   
425-230 8 Bellevue WA STTLWAWB18Z  674   2016-05-21   
425-230 9 Bellevue WA STTLWAWB18Z  674   2016-05-21   
425-399 9 Silver Lake WA STTLWAWB18Z  674   2016-05-21   
425-436 6 Bellevue WA STTLWAWB18Z  674   2019-09-06   
425-535 A Everett WA STTLWAWB18Z  674      
425-535 9 Everett WA STTLWAWB18Z  674   2018-12-27   
425-585 5 Silver Lake WA STTLWAWB18Z  674   2016-05-21   
425-585 6 Silver Lake WA STTLWAWB18Z  674   2019-05-05   
425-585 7 Silver Lake WA STTLWAWB18Z  674   2019-08-22   
425-666 4 Everett WA STTLWAWB18Z  674   2020-10-08   
425-666 5 Everett WA STTLWAWB18Z  674   2020-10-08   
425-800 1 Bellevue WA STTLWAWB18Z  674   2017-11-05   
425-800 2 Bellevue WA STTLWAWB18Z  674   2017-11-05   
430-450 A Longview TX LGVWTXPLXOY  554   2026-01-22   
430-450 6 Longview TX LGVWTXPLXOY  554   2026-01-22   
430-450 7 Longview TX LGVWTXPLXOY  554   2026-01-22   
430-450 8 Longview TX LGVWTXPLXOY  554   2026-01-22   
430-450 9 Longview TX LGVWTXPLXOY  554   2026-01-22   
432-359 A Odessa TX   542   2026-09-20   
432-359 7 Odessa TX   542   2026-09-20   
432-359 8 Odessa TX   542   2026-09-20   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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