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.

Willoughby, OH

<< 1 2 3 4 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
440-391 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320      
440-391 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320      
440-463 A CLEVOHBBGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320      
440-477 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-478 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-479 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-487 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-488 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-497 A INDPOHDBDS0  7532 TELEPORT COMMUNICATIONS AMERICA, LLC - OH 320      
440-497 0   001F BANDWIDTH.COM CLEC, LLC - OH 320   2009-01-04   
440-497 1   7532 TELEPORT COMMUNICATIONS AMERICA, LLC - OH 320      
440-497 2   6529 T-MOBILE USA, INC. 320   2018-11-23   
440-497 3   6529 T-MOBILE USA, INC. 320   2018-11-23   
440-497 4   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320   2005-09-17   
440-497 5   460K FIRST COMMUNICATIONS, LLC 320   2002-05-18   
440-497 6   001F BANDWIDTH.COM CLEC, LLC - OH 320   2010-11-30   
440-497 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-03-06   
440-497 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-03-06   
440-497 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2016-06-23   
440-507 A INDPOHEEAMD  6630 USA MOBILITY WIRELESS, INC. 320      
440-510 A CLEVOHIWDS0  7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-510 0   7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-510 1   7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-510 2   7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-510 3   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320   2010-09-26   
440-510 4   7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-510 5   464C ONVOY, LLC - OH 320   2021-03-01   
440-510 6   6529 T-MOBILE USA, INC. 320   2022-02-27   
440-510 7   6529 T-MOBILE USA, INC. 320   2022-02-27   
440-510 8   793K TWC IP ENABLED SERVICES, LLC 320   2009-03-16   
440-510 9   7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-520 A CLEVOHBBGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320      
440-520 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2009-10-02   
440-520 1   001F BANDWIDTH.COM CLEC, LLC - OH 320   2010-06-17   
440-520 2   6529 T-MOBILE USA, INC. 320   2009-03-09   
440-520 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-04-23   
440-520 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-04-23   
440-520 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-04-23   
440-520 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2008-10-28   
440-520 7   7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320   2008-09-15   
440-520 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2009-10-02   
440-520 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2010-10-20   
440-521 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-525 A CLEVOHIWDS0  7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-525 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-06-22   
440-525 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-06-22   
440-525 2   001F BANDWIDTH.COM CLEC, LLC - OH 320   2010-05-28   
440-525 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-06-22   
440-525 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-06-22   
440-525 5   516C AT&T CORP. 320   2005-06-15   
440-525 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2009-10-02   
440-525 7   7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-525 8   829J PAETEC ITEL, LLC 320   2016-03-07   
440-525 9   7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 320      
440-527 A CLEVOH975MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320      
440-527 0   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320      
440-527 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-08-06   
440-527 2   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320      
440-527 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2006-08-06   
440-527 4   6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320   2008-01-06   
440-527 5   145J TERRA NOVA TELECOM INC. 320   2022-08-02   
440-527 6   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320      
440-527 7   829J PAETEC ITEL, LLC 320   2009-10-22   
440-527 8   793K TWC IP ENABLED SERVICES, LLC 320   2006-12-06   
440-527 9   516J TON80 COMMUNICATIONS, LLC 320   2021-11-18   
440-530 A INDPOHDBDS0  7532 TELEPORT COMMUNICATIONS AMERICA, LLC - OH 320      
440-530 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2010-04-12   
440-530 1   7532 TELEPORT COMMUNICATIONS AMERICA, LLC - OH 320      
440-530 2   7532 TELEPORT COMMUNICATIONS AMERICA, LLC - OH 320      
440-530 3   829J PAETEC ITEL, LLC 320   2010-01-06   
440-530 4   464C ONVOY, LLC - OH 320   2016-03-04   
440-530 5   6529 T-MOBILE USA, INC. 320   2017-05-22   
440-530 6   464C ONVOY, LLC - OH 320   2020-01-10   
440-530 7   464C ONVOY, LLC - OH 320   2020-01-10   
440-530 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2018-09-24   
440-530 9   464C ONVOY, LLC - OH 320   2016-03-04   
440-537 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-547 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-562 A INDPOHEEAMD  6630 USA MOBILITY WIRELESS, INC. 320      
440-567 A NRTNOHIADMD  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320      
440-571 A WLGHOH9495C  9321 OHIO BELL TEL CO 320      
440-571 0   001F BANDWIDTH.COM CLEC, LLC - OH 320   2011-07-03   
440-571 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 320   2011-07-14   
440-571 2   6529 T-MOBILE USA, INC. 320   2012-03-26   
440-571 3   284F PEERLESS NETWORK OF OHIO, LLC - OH 320   2013-04-26   
440-571 4   793K TWC IP ENABLED SERVICES, LLC 320   2013-09-18   
440-571 5   793K TWC IP ENABLED SERVICES, LLC 320   2013-09-15   
440-571 6   464C ONVOY, LLC - OH 320   2014-09-06   
440-571 7   464C ONVOY, LLC - OH 320   2012-01-07   
440-571 8   284F PEERLESS NETWORK OF OHIO, LLC - OH 320   2013-04-26   
440-571 9   9321 OHIO BELL TEL CO 320      
440-602 A WLGHOH9495C  9321 OHIO BELL TEL CO 320      
440-602 0   9321 OHIO BELL TEL CO 320   2009-02-19   
440-602 1   145J TERRA NOVA TELECOM INC. 320   2020-12-30   
440-602 2   6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320   2010-06-26   
440-602 3   9321 OHIO BELL TEL CO 320      
440-602 4   9321 OHIO BELL TEL CO 320      
440-602 5   9321 OHIO BELL TEL CO 320      
440-602 6   9321 OHIO BELL TEL CO 320      
440-602 7   9321 OHIO BELL TEL CO 320      

<< 1 2 3 4 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.