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.

NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

<< 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 27 28 29 30 31 32 33 34 35 36 37 38 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-559 8 McBain MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-559 9 McBain MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-563 A Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-563 0 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-563 1 Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-563 2 Muskegon MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348      
231-563 3 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-563 4 Muskegon MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348      
231-563 5 Muskegon MI MSKGMIXKX1X  543C ONVOY, LLCV - MI 348      
231-563 6 Muskegon MI GDRPMIBL40Z  318J COMCAST IP PHONE, LLC 348      
231-563 7 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 A Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 0 Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 1 Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 2 Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 3 Kalkaska MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-564 4 Kalkaska MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-564 5 Kalkaska MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-564 6 Kalkaska MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-564 7 Kalkaska MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-564 8 Kalkaska MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-564 9 Kalkaska MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-566 A Harrietta MI BRSPMI097MD  516J TON80 COMMUNICATIONS, LLC 348      
231-566 0 Harrietta MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-566 1 Harrietta MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-566 5 Harrietta MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-566 6 Harrietta MI BRSPMI097MD  516J TON80 COMMUNICATIONS, LLC 348      
231-567 A Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-567 0 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348      
231-567 1 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348      
231-567 2 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348      
231-567 3 Muskegon MI GDRPMIBLXDZ  5562 METROPCS, INC. 348      
231-567 4 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348      
231-567 5 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-567 6 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-567 7 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-567 8 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-567 9 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-568 A Traverse City MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-569 A Petoskey MI GDRPMIBLXGZ  9748 AMERICAN MESSAGING SERVICES, LLC 348      
231-570 A Fife Lake MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-570 0 Fife Lake MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-570 1 Fife Lake MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348      
231-570 2 Fife Lake MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-570 3 Fife Lake MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-570 4 Fife Lake MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-570 5 Fife Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-570 6 Fife Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-570 7 Fife Lake MI GDRPMIBL15Z  516C AT&T CORP. 348      
231-570 8 Fife Lake MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-570 9 Fife Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-571 A Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-571 0 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-571 1 Muskegon MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-571 2 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-571 3 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-571 4 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-571 5 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-571 6 Muskegon MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-571 7 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-571 8 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-571 9 Muskegon MI MSKGMIXKDS1  0695 FRONTIER NORTH, INC. - MI 348      
231-577 A Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-577 0 Cadillac MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-577 1 Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-577 2 Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-577 3 Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-577 4 Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-577 5 Cadillac MI GDRQMIBODS0  7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 348      
231-577 6 Cadillac MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-577 7 Cadillac MI   829J PAETEC ITEL, LLC 348      
231-577 8 Cadillac MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-577 9 Cadillac MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-578 A Muskegon MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 0 Muskegon MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 1 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 2 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 3 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 4 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 5 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 6 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 7 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 8 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-578 9 Muskegon MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-580 A Big Rapids MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-580 0 Big Rapids MI   829J PAETEC ITEL, LLC 348      
231-580 1 Big Rapids MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-580 3 Big Rapids MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-580 4 Big Rapids MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-580 5 Big Rapids MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-580 6 Big Rapids MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-580 7 Big Rapids MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-580 8 Big Rapids MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-580 9 Big Rapids MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-581 A Alba MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-581 0 Alba MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-582 A Boyne City MI BOCYMIBCDS0  9323 MICHIGAN BELL TEL CO 348      
231-583 A Ludington MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-583 0 Ludington MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-583 1 Ludington MI GDRPMIBLX8Z  2550 123.NET, LLC 348      

<< 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 27 28 29 30 31 32 33 34 35 36 37 38 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.