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.

Hillsdale, MI

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-607 1 LNNGMIXIAMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2004-02-15   
517-607 2 HLDLMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-607 3 HLDLMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-607 4 HLDLMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-607 5 LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2009-09-26   
517-607 6 LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2011-01-07   
517-607 7 LNNGMIMNX8Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2008-11-01   
517-607 8 LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2010-06-25   
517-607 9 LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2011-04-14   
517-610 A LNNGMIMNXHY  6664 SPRINT SPECTRUM, L.P. 346      
517-610 0 LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2010-08-11   
517-610 1 LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-610 2 LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-610 3 LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-610 4 LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-610 5 LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2008-08-28   
517-610 6 LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-610 7 LNNGMIMNX3Z  260E YMAX COMMUNICATIONS CORP. - MI 346   2008-12-10   
517-610 8 LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2007-03-17   
517-610 9   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-689 A LNNGMIDCHMD  4632 TELNET WORLDWIDE, INC. 346      
517-797 A LNNGMIMN12Z  0975 LONG DISTANCE OF MICHIGAN, INC. DBA LDMI - MI 346      
517-797 0 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-03-05   
517-797 1 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2013-01-30   
517-797 2 LNNGMIMN12Z  7701 PHONE MICHIGAN - MI 346   2013-08-30   
517-797 3 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2012-02-22   
517-797 4 LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2003-05-21   
517-797 5 LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2005-12-29   
517-797 6 LNNGMIMNXMZ  516C AT&T CORP. 346   2011-09-30   
517-797 7 LNNGMIMNX3Z  260E YMAX COMMUNICATIONS CORP. - MI 346   2008-12-10   
517-797 8 LNNGMIMN12Z  0975 LONG DISTANCE OF MICHIGAN, INC. DBA LDMI - MI 346   2005-04-11   
517-797 9 LNNGMIMNX3Z  260E YMAX COMMUNICATIONS CORP. - MI 346   2008-12-10   
517-825 A LNNGMIXIAMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346      
517-828 A LNNGMIMNX3Y  2550 123.NET, INC. 346      
517-964 A MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      

<< 1 2

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.