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
231-201 A Chippewa Lake MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-201 0 Chippewa Lake MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-201 1 Chippewa Lake MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-201 2 Chippewa Lake MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2018-04-16   
231-201 3 Chippewa Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-201 4 Chippewa Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-201 5 Chippewa Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-201 6 Chippewa Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-09-12   
231-201 7 Chippewa Lake MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-16   
231-201 8 Chippewa Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2018-10-20   
231-201 9 Chippewa Lake MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-09-12   
231-202 A Mecosta MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-202 0 Mecosta MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2018-10-20   
231-202 1 Mecosta MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-202 2 Mecosta MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2019-12-19   
231-202 3 Mecosta MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2019-12-13   
231-202 4 Mecosta MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2019-12-13   
231-202 5 Mecosta MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-20   
231-202 6 Mecosta MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-202 7 Mecosta MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-202 8 Mecosta MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-202 9 Mecosta MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-203 A Alanson MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-203 0 Alanson MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-203 1 Alanson MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-203 2 Alanson MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2012-10-05   
231-203 3 Alanson MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-203 4 Alanson MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-203 5 Alanson MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2015-10-28   
231-203 6 Alanson MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2019-08-05   
231-203 7 Alanson MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-19   
231-203 8 Alanson MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2019-09-05   
231-204 A Fife Lake MI GDRPMIBL44Z  6630 USA MOBILITY WIRELESS, INC. 348      
231-205 A Brutus MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-206 A Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 0 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 1 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 2 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 3 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 4 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 5 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 6 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 7 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 8 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-206 9 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-207 A Honor MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-208 A Boyne Falls MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-209 A Suttons Bay MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-210 A St James MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-210 2 St James MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-09-10   
231-210 6 St James MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2023-09-20   
231-212 A Interlochen MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348      
231-212 0 Interlochen MI GDRPMIBLX8Z  2550 123.NET, LLC 348   2020-01-04   
231-212 1 Interlochen MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-212 3 Interlochen MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-212 5 Interlochen MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-11-22   
231-212 7 Interlochen MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2016-09-23   
231-212 9 Interlochen MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2023-09-22   
231-213 A Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348      
231-213 0 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 1 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 2 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 3 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 4 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 5 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 6 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 7 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 8 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-213 9 Traverse City MI TRCYMIMNDS1  9323 MICHIGAN BELL TEL CO 348   2015-04-25   
231-215 A Muskegon MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-216 A Frankfort MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348      
231-216 0 Frankfort MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2018-10-26   
231-216 1 Frankfort MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2016-01-22   
231-216 2 Frankfort MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2017-02-12   
231-216 3 Frankfort MI BRSPMI092MD  197D VONAGE AMERICA LLC 348   2019-10-11   
231-216 4 Frankfort MI GDRQMIBODS0  7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 348   2020-09-08   
231-216 5 Frankfort MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2020-10-29   
231-216 6 Frankfort MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2018-09-13   
231-216 7 Frankfort MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2016-03-18   
231-216 8 Frankfort MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2016-03-18   
231-216 9 Frankfort MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
231-217 A Bear Lake MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-218 A Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 0 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 1 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 2 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 3 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 4 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 5 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 6 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 7 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 8 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-218 9 Traverse City MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-219 A Merritt MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348      
231-220 A Muskegon MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-220 0 Muskegon MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-220 1 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2011-03-04   
231-220 2 Muskegon MI GDRPMIBLX8Z  2550 123.NET, LLC 348   2009-11-23   
231-220 3 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2011-03-04   
231-220 4 Muskegon MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2011-03-04   

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: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.