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.

Royal Oak, MI

1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
248-206 A SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-206 0   991E BANDWIDTH.COM CLEC, LLC - MI 340   2014-04-14   
248-206 1   9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2014-05-01   
248-206 2   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2014-04-05   
248-206 3   543C ONVOY, LLCV - MI 340   2014-04-20   
248-206 4   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2015-08-06   
248-206 5   991E BANDWIDTH.COM CLEC, LLC - MI 340   2014-08-31   
248-206 6   508J CENTURYLINK COMMUNICATIONS, LLC 340   2014-09-24   
248-206 7   318J COMCAST IP PHONE, LLC 340   2014-07-31   
248-206 8   543C ONVOY, LLCV - MI 340   2014-08-31   
248-206 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2014-09-17   
248-217 A DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
248-219 A DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
248-224 A DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
248-235 A CMPTMIIFCM0  9748 AMERICAN MESSAGING SERVICES, LLC 340      
248-246 A SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-246 0   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-246 1   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-246 2   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-246 3   2550 123.NET, LLC 340      
248-246 4   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-246 5   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-246 6   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-246 7   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-246 8   145J TERRA NOVA TELECOM INC. 340   2022-07-12   
248-259 A LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2024-02-09   
248-259 0   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
248-259 1   5562 METROPCS, INC. 340      
248-259 2   5562 METROPCS, INC. 340      
248-259 3   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
248-259 4   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
248-259 5   5562 METROPCS, INC. 340      
248-259 6   5562 METROPCS, INC. 340      
248-259 7   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
248-259 8   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
248-259 9   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
248-268 A WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
248-268 0   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2014-01-03   
248-268 1   318J COMCAST IP PHONE, LLC 340   2014-02-02   
248-268 2   318J COMCAST IP PHONE, LLC 340   2013-05-20   
248-268 3   318J COMCAST IP PHONE, LLC 340   2013-08-12   
248-268 4   318J COMCAST IP PHONE, LLC 340   2013-10-31   
248-268 5   829J PAETEC ITEL, LLC 340   2013-08-12   
248-268 6   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2013-08-23   
248-268 7   046L CLEAR RATE COMMUNICATIONS, LLC 340   2013-07-18   
248-268 8   2550 123.NET, LLC 340   2013-08-03   
248-268 9   829J PAETEC ITEL, LLC 340   2013-08-12   
248-280 A TROYMISMDS0  9323 MICHIGAN BELL TEL CO 340      
248-284 A SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-284 0   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-284 1   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-284 2   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-284 3   5562 METROPCS, INC. 340   2010-08-08   
248-284 4   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2011-01-23   
248-284 5   5562 METROPCS, INC. 340   2005-08-05   
248-284 6   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-284 7   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-284 8   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-284 9   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-288 A TROYMISMDS0  9323 MICHIGAN BELL TEL CO 340      
248-291 A SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-291 0   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-291 1   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-291 2   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-291 3   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2007-12-04   
248-291 4   5562 METROPCS, INC. 340   2008-12-30   
248-291 5   318J COMCAST IP PHONE, LLC 340   2010-09-10   
248-291 6   318J COMCAST IP PHONE, LLC 340   2010-09-10   
248-291 7   991E BANDWIDTH.COM CLEC, LLC - MI 340   2011-03-27   
248-291 8   7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340      
248-291 9   543C ONVOY, LLCV - MI 340   2012-02-22   
248-298 A FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
248-298 0   829J PAETEC ITEL, LLC 340      
248-298 1   829J PAETEC ITEL, LLC 340      
248-298 2   829J PAETEC ITEL, LLC 340      
248-298 3   829J PAETEC ITEL, LLC 340      
248-298 4   829J PAETEC ITEL, LLC 340      
248-298 5   829J PAETEC ITEL, LLC 340      
248-298 6   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2004-09-27   
248-298 7   829J PAETEC ITEL, LLC 340      
248-298 8   829J PAETEC ITEL, LLC 340      
248-298 9   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2004-08-31   
248-300 A DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-02-13   
248-300 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2026-02-08   
248-300 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-08-09   
248-300 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-05-11   
248-300 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-02-13   
248-300 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-02-13   
248-307 A TROYMIMNRPA  9323 MICHIGAN BELL TEL CO 340      
248-307 0   9323 MICHIGAN BELL TEL CO 340      
248-307 1   9323 MICHIGAN BELL TEL CO 340      
248-307 2   9323 MICHIGAN BELL TEL CO 340      
248-307 3   9323 MICHIGAN BELL TEL CO 340      
248-307 4   9323 MICHIGAN BELL TEL CO 340      
248-307 5   9323 MICHIGAN BELL TEL CO 340      
248-307 6   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2010-12-19   
248-307 7   318J COMCAST IP PHONE, LLC 340   2018-04-04   
248-307 8   046L CLEAR RATE COMMUNICATIONS, LLC 340   2018-03-16   
248-307 9   9323 MICHIGAN BELL TEL CO 340      
248-316 A SFLDMIMKDS2  6630 USA MOBILITY WIRELESS, INC. 340      

1 2 3 4 5 6 7 >>

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.