Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-437 A Barnstable MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 0 Barnstable MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 2 Barnstable MA SOVLMAABBMD  145J TERRA NOVA TELECOM INC. 128   2026-07-28   
508-437 3 Barnstable MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2018-11-29   
508-437 5 Barnstable MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 6 Barnstable MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 7 Barnstable MA   145J TERRA NOVA TELECOM INC. 128   2025-08-29   
508-437 8 Barnstable MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 9 Barnstable MA   515J IP HORIZON LLC 128   2019-04-26   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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