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

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
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   
425-225 0 Silver Lake WA EVRTWAXAXVX  674   2016-09-11   
425-225 9 Silver Lake WA EVRTWAXAXVX  674   2016-09-11   
425-230 8 Bellevue WA EVRTWAXAXVX  674   2016-05-21   
425-230 9 Bellevue WA EVRTWAXAXVX  674   2016-05-21   
425-399 9 Silver Lake WA EVRTWAXAXVX  674   2016-05-21   
425-436 6 Bellevue WA EVRTWAXAXVX  674   2019-09-06   
425-535 A Everett WA EVRTWAXAXVX  674      
425-535 9 Everett WA EVRTWAXAXVX  674   2018-12-27   
425-585 5 Silver Lake WA EVRTWAXAXVX  674   2016-05-21   
425-585 6 Silver Lake WA EVRTWAXAXVX  674   2019-05-05   
425-585 7 Silver Lake WA EVRTWAXAXVX  674   2019-08-22   
425-666 4 Everett WA EVRTWAXAXVX  674   2020-10-08   
425-666 5 Everett WA EVRTWAXAXVX  674   2020-10-08   
425-800 2 Bellevue WA EVRTWAXAXVX  674   2017-11-05   
434-291 A Lynchburg VA LYBGVA556MD  250      
434-291 8 Lynchburg VA LYBGVA556MD  250   2020-11-20   
434-291 9 Lynchburg VA LYBGVA556MD  250   2020-11-20   
434-833 A Charlottesville VA CHVLVAXAXOY  928      
434-833 8 Charlottesville VA CHVLVAXAXOY  928   2020-11-20   
434-833 9 Charlottesville VA CHVLVAXAXOY  928   2020-11-20   
440-672 A Cleveland OH CLEVOHEKLMD  320      
440-672 8 Cleveland OH CLEVOHEKLMD  320   2020-10-09   
440-672 9 Cleveland OH CLEVOHEKLMD  320   2020-10-09   
440-696 A Brecksville OH CLEVOHEKPMD  320      
440-696 8 Brecksville OH CLEVOHEKPMD  320   2021-06-13   
440-696 9 Brecksville OH CLEVOHEKPMD  320   2021-06-13   
442-204 7 Vista CA SNDGCA0261Z  732   2016-06-11   
442-204 8 Vista CA SNDGCA0261Z  732   2016-06-11   
442-204 9 Vista CA SNDGCA0261Z  732   2016-06-11   
442-227 A Palm Desert CA PLSPCAXGXVZ  973      
442-227 1 Palm Desert CA PLSPCAXGXVZ  973   2013-12-16   
442-235 5 Barstow: Barstow DA CA LSANCARCY1X  730   2014-08-15   
442-243 3 Victorville: Victorville DA CA LSANCARCY1X  730   2014-08-15   
443-227 3 Port Deposit MD BLTMMDCHXVX  238   2016-05-14   
443-227 6 Port Deposit MD BLTMMDCHXVX  238   2016-05-14   
443-227 8 Port Deposit MD BLTMMDCHXVX  238   2016-05-14   
443-227 9 Port Deposit MD BLTMMDCHXVX  238   2016-05-14   
443-412 6 Churchville MD BLTMMDCHXVX  238   2016-05-14   
443-464 3 Churchville MD BLTMMDCHXVX  238   2016-05-14   
443-464 7 Churchville MD BLTMMDCHXVX  238   2016-05-14   
443-568 7 Arbutus MD BLTMMDCHXVX  238   2020-05-01   
443-661 7 Waterloo MD BLTMMDCHXVX  238   2020-05-02   
443-731 7 Port Deposit MD BLTMMDCHXVX  238   2016-05-14   
443-747 6 Port Deposit MD BLTMMDCHXVX  238   2016-05-14   
443-755 2 Waterloo MD BLTMMDCHXVX  238   2016-05-14   
443-755 4 Waterloo MD BLTMMDCHXVX  238   2016-05-14   
443-755 6 Waterloo MD BLTMMDCHXVX  238   2016-05-14   
443-755 7 Waterloo MD BLTMMDCHXVX  238   2016-05-14   
445-207 A Philadelphia Zone 1 PA PHLAPAMKXLX  228      
445-207 8 Philadelphia Zone 1 PA PHLAPAMKXLX  228   2021-10-09   
445-207 9 Philadelphia Zone 1 PA PHLAPAMKXLX  228   2021-10-09   
447-252 A Mattoon IL MTONILXCXMX  976      
447-252 9 Mattoon IL MTONILXCXMX  976   2023-05-11   
447-446 A Champaign-Urbana IL CHMPILCPXDY  370      
447-446 9 Champaign-Urbana IL CHMPILCPXDY  370   2021-04-11   
447-448 A Springfield IL SPFDILESXZX  374      
447-448 9 Springfield IL SPFDILESXZX  374   2021-04-11   
448-221 A Pensacola FL PNSCFLBL13Z  44813      
448-221 8 Pensacola FL PNSCFLBL13Z  44813   2023-05-11   
448-221 9 Pensacola FL PNSCFLBL13Z  44813   2023-05-11   
448-449 A Tallahassee FL   953   2025-06-20   
448-449 7 Tallahassee FL   953   2025-06-20   
448-449 8 Tallahassee FL   953   2025-06-20   
448-449 9 Tallahassee FL   953   2025-06-20   
458-228 5 Sumpter OR PTLDOR13XEX  672   2020-09-27   
458-228 6 Sumpter OR PTLDOR13XEX  672   2020-09-27   
458-298 A Eugene OR EUGNOR147MD  670      
458-298 8 Eugene OR EUGNOR147MD  670   2023-05-11   
458-298 9 Eugene OR EUGNOR147MD  670   2023-05-11   
463-239 A Indianapolis IN IPLWIN75X0X  336      
463-239 9 Indianapolis IN IPLWIN75X0X  336   2020-10-09   
463-253 A Indianapolis IN IPLWIN75X5X  336      
463-253 9 Indianapolis IN IPLWIN75X5X  336   2021-09-18   
463-426 1 Indianapolis IN IPLWIN75X0X  336   2021-08-20   
469-809 A Dallas TX DLLSTX97X8X  552      
469-809 9 Dallas TX DLLSTX97X8X  552   2020-04-11   
470-480 A Atlanta GA ATLNGAEPXKY  438      
470-480 9 Atlanta GA ATLNGAEPXKY  438   2019-03-10   
470-531 6 Atlanta Northwest GA ATLNGAEPXKY  438   2020-04-24   
470-596 A Atlanta Northwest GA ATLNGAEPXKY  438      
470-596 9 Atlanta Northwest GA ATLNGAEPXKY  438   2020-05-18   
470-661 3 Atlanta South GA ATLNGAEPXKY  438   2020-04-24   
470-670 A Atlanta GA ATLNGAEPXNY  438      
470-670 8 Atlanta GA ATLNGAEPXKY  438   2020-05-22   
470-670 9 Atlanta GA ATLNGAEPXNY  438   2020-05-22   
470-938 9 Atlanta Northwest GA ATLNGAEPXKY  438   2020-04-24   
472-272 A Fayetteville NC   949   2025-06-21   
472-272 7 Fayetteville NC   949   2025-06-21   
472-272 8 Fayetteville NC   949   2025-06-21   
472-272 9 Fayetteville NC   949   2025-06-21   
475-200 8 Huntington CT   920   2025-08-15   
475-260 2 Huntington CT   920   2025-08-15   
475-314 A Huntington CT HRFRCT0300Z  920      
475-314 9 Huntington CT HRFRCT0300Z  920   2022-10-03   
475-369 7 Huntington CT   920   2025-08-15   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 >>

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.