Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
781-996 7 Waltham MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2012-04-07   
857-209 A Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-209 5 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-209 9 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-10-07   
857-233 0 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-04-10   
857-233 9 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-04-10   
857-241 A Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-241 3 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-12-18   
857-241 4 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-12-18   
857-250 3 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2012-06-29   
857-254 1 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-11-28   
857-254 8 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-11-28   
857-263 2 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-02-07   
857-264 2 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2010-11-23   
857-264 3 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2010-11-23   
857-270 2 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2015-07-14   
857-270 5 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2015-09-08   
857-270 6 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2015-09-08   
857-277 5 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-08-30   
857-277 7 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-08-30   
857-285 7 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2020-02-07   
857-287 2 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-03-25   
857-287 3 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-03-25   
857-288 1 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-05-13   
857-296 A Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-296 1 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-10-07   
857-305 A Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-305 0 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-05-23   
857-305 2 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2013-09-19   
857-305 8 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-05-09   
857-305 9 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-05-09   
857-306 0 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 1 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 2 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 3 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 4 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 5 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 6 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 7 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 8 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-313 3 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2013-01-27   
857-315 0 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-315 1 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-315 2 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-315 3 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-327 6 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2015-04-04   
857-335 5 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2019-10-03   
857-342 1 Hyde Park MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-14   
857-354 2 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2019-09-13   
857-354 3 Boston MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2019-09-08   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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