Local Calling Guide
Area code/prefix search
  
        Chilmark, MA
      
  
    
      | NPA-NXX | BLOCK | Switch | OCN | LATA | LIR | Eff date | Disc date | 
  
  
          
          | 508-645 | A | CHLMMASTRS1 | 9102 VERIZON NEW ENGLAND INC. | 128 |  |  |  | 
        
          | 508-645 | 0 | BSTPMALLDS3 | 892D ONVOY, LLC - MA | 128 |  | 2016-04-04 |  | 
        
          | 508-645 | 2 | CHLMMASTRS1 | 9102 VERIZON NEW ENGLAND INC. | 128 |  |  |  | 
        
          | 508-645 | 3 | CHLMMASTRS1 | 9102 VERIZON NEW ENGLAND INC. | 128 |  |  |  | 
        
          | 508-645 | 4 | CMBRMAORDSG | 4018 LEVEL 3 COMMUNICATIONS, LLC - MA | 128 |  | 2004-09-07 |  | 
        
          | 508-645 | 5 | CHLMMASTRS1 | 9102 VERIZON NEW ENGLAND INC. | 128 |  |  |  | 
        
          | 508-645 | 6 | BSTNMABLOMD | 990E BANDWIDTH.COM CLEC, LLC - MA | 128 |  | 2010-02-22 |  | 
        
          | 508-645 | 7 | CHLMMASTRS1 | 9102 VERIZON NEW ENGLAND INC. | 128 |  |  |  | 
        
          | 508-645 | 8 | BSTPMALLDS3 | 892D ONVOY, LLC - MA | 128 |  | 2016-04-04 |  | 
        
          | 508-645 | 9 | CHLMMASTRS1 | 9102 VERIZON NEW ENGLAND INC. | 128 |  |  |  | 
        
          | 508-955 | A | BSTNMABLOMD | 990E BANDWIDTH.COM CLEC, LLC - MA | 128 |  |  |  | 
        
          | 508-955 | 0 | BSTNMABLOMD | 990E BANDWIDTH.COM CLEC, LLC - MA | 128 |  | 2008-12-06 |  | 
        
          | 508-955 | 2 | SOVLMAABBMD | 145J TERRA NOVA TELECOM INC. | 128 |  | 2024-05-09 |  | 
        
          | 508-955 | 3 | BSTNMABLOMD | 990E BANDWIDTH.COM CLEC, LLC - MA | 128 |  | 2015-05-24 |  | 
        
          | 508-955 | 4 |  | 515J IP HORIZON LLC | 128 |  | 2015-10-18 |  | 
        
          | 508-955 | 5 | BSTPMALLDS3 | 892D ONVOY, LLC - MA | 128 |  | 2010-04-07 |  | 
        
          | 508-955 | 6 | BSTPMALL5MD | 508J CENTURYLINK COMMUNICATIONS, LLC | 128 |  | 2014-04-25 |  | 
        
          | 508-955 | 7 | SOVLMAABDS2 | 268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 128 |  | 2013-05-04 |  | 
        
          | 508-955 | 8 | SOVLMAABDS2 | 268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 128 |  | 2013-05-04 |  | 
        
          | 508-955 | 9 | NWTNMAWAVMD | 318J COMCAST IP PHONE, LLC | 128 |  | 2006-10-30 |  | 
        
          | 774-717 | A | CMBRMAORDS0 | 7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC  - MA | 128 |  |  |  | 
        
          | 774-717 | 0 | BSTPMALLDS3 | 892D ONVOY, LLC - MA | 128 |  | 2019-02-08 |  | 
        
          | 774-717 | 1 | BSTPMALLDS3 | 892D ONVOY, LLC - MA | 128 |  | 2019-02-08 |  | 
        
          | 774-717 | 2 | BSTNMABLOMD | 990E BANDWIDTH.COM CLEC, LLC - MA | 128 |  | 2019-06-13 |  | 
        
          | 774-717 | 3 | CMBRMAORDS0 | 7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC  - MA | 128 |  | 2017-03-06 |  | 
        
          | 774-717 | 4 | BSTNMABLOMD | 990E BANDWIDTH.COM CLEC, LLC - MA | 128 |  | 2019-07-26 |  | 
        
          | 774-717 | 6 | BSTPMALLDS3 | 892D ONVOY, LLC - MA | 128 |  | 2021-03-28 |  | 
        
          | 774-717 | 8 | BSTPMALLOMD | 073H TELNYX LLC | 128 |  | 2019-09-27 |  | 
        
          | 774-717 | 9 | CMBRMABENMD | 624H ONVOY SPECTRUM, LLC | 128 |  | 2021-04-08 |  | 
        
          | 774-784 | A | BSTPMALLDS3 | 892D ONVOY, LLC - MA | 128 |  |  |  | 
        
          | 774-784 | 0 | BSTNMABLOMD | 990E BANDWIDTH.COM CLEC, LLC - MA | 128 |  | 2022-02-19 |  | 
        
          | 774-784 | 2 | NWTNMAWAVMD | 318J COMCAST IP PHONE, LLC | 128 |  | 2022-07-15 |  | 
        
          | 774-784 | 4 | CMBRMABENMD | 624H ONVOY SPECTRUM, LLC | 128 |  | 2022-02-25 |  | 
        
          | 774-784 | 6 | SOVLMAABCMD | 516J TON80 COMMUNICATIONS, LLC | 128 |  | 2021-06-04 |  | 
        
          | 774-784 | 7 | BSTPMALLDS3 | 892D ONVOY, LLC - MA | 128 |  | 2021-06-03 |  | 
        
          | 774-784 | 9 | SOVLMAABDS2 | 268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 128 |  | 2023-07-24 |  | 
  
  
   Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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