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.

Ann Arbor, MI

1 2 3 4 5 6 7 8 9 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
734-205 A SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-205 0   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-205 1   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-205 2   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-205 3   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-205 4   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-205 5   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-205 6   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-205 7   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2011-09-07   
734-205 8   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2011-09-07   
734-205 9   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
734-210 A SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340      
734-210 0   991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-05-03   
734-210 1   991E BANDWIDTH.COM CLEC, LLC - MI 340   2018-05-03   
734-210 2   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2018-05-04   
734-210 3   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2018-05-04   
734-210 4   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2018-05-04   
734-210 5   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2018-09-27   
734-210 6   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2018-07-19   
734-210 7   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2018-09-27   
734-210 8   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2018-07-20   
734-210 9   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2018-07-20   
734-213 A ANARMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
734-214 A ANARMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
734-216 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 0   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 1   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 2   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 3   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 4   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 5   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 6   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 7   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 8   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-216 9   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-222 A ANARMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
734-223 A DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
734-232 A ANARMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
734-232 0   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 1   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 2   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 3   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 4   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 5   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 6   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 7   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 8   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-232 9   9323 MICHIGAN BELL TEL CO 340   2004-07-02   
734-239 A SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-239 0   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2010-02-09   
734-239 1   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2003-03-01   
734-239 2   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2003-03-01   
734-239 3   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2003-03-01   
734-239 4   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2003-03-25   
734-239 5   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2003-04-23   
734-239 6   829J PAETEC ITEL, LLC 340   2005-04-10   
734-239 7   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-08-20   
734-239 8   9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
734-239 9   792K CHARTER IP ENABLED SERVICES, LLC 340   2007-02-25   
734-249 A DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340      
734-249 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2012-09-17   
734-249 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2012-09-17   
734-249 2   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2012-09-17   
734-249 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2012-09-17   
734-249 4   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2012-10-21   
734-249 5   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2012-09-11   
734-249 6   991E BANDWIDTH.COM CLEC, LLC - MI 340   2013-06-18   
734-249 7   046L CLEAR RATE COMMUNICATIONS, LLC 340   2013-09-21   
734-249 8   991E BANDWIDTH.COM CLEC, LLC - MI 340   2014-07-26   
734-249 9   991E BANDWIDTH.COM CLEC, LLC - MI 340   2014-03-27   
734-251 A SFLDMITODS2  543C ONVOY, LLCV - MI 340      
734-251 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2023-10-09   
734-251 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-03-11   
734-251 2   543C ONVOY, LLCV - MI 340   2023-09-25   
734-251 3   543C ONVOY, LLCV - MI 340   2023-09-25   
734-251 4   543C ONVOY, LLCV - MI 340   2023-09-25   
734-251 5   543C ONVOY, LLCV - MI 340   2023-09-25   
734-251 6   321J HD CARRIER LLC 340   2025-11-03   
734-251 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2026-01-18   
734-251 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-11-28   
734-255 A DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340      
734-260 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 0   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 1   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 2   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 3   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 4   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 5   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 6   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 7   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 8   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-260 9   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
734-263 A DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
734-263 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2016-12-15   
734-263 1   991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-07-17   
734-263 2   318J COMCAST IP PHONE, LLC 340   2016-10-01   
734-263 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2015-10-29   
734-263 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2015-10-29   
734-263 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2015-10-29   
734-263 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2015-10-29   

1 2 3 4 5 6 7 8 9 >>

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.