Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
571-977 8 Washington Zone 8 VA BTVLMD12CMA  236   2021-01-02   
571-977 9 Washington Zone 8 VA BTVLMD12CMA  236   2021-01-02   
571-982 9 Washington Zone 8 VA BTVLMD12CMA  236   2013-11-10   
571-992 A Washington Zone 19 VA BTVLMD12CMA  236      
571-992 6 Washington Zone 19 VA BTVLMD12CMA  236   2015-01-02   
571-992 7 Washington Zone 19 VA BTVLMD12CMA  236   2015-01-02   
571-992 8 Washington Zone 19 VA BTVLMD12CMA  236   2015-01-02   
571-992 9 Washington Zone 19 VA BTVLMD12CMA  236   2015-01-02   
571-999 5 Washington Zone 17 VA BTVLMD12CMA  236   2016-12-09   
667-200 6 Columbia MD BLTMMDCH40Z  238   2016-05-31   
667-200 9 Columbia MD BLTMMDCH40Z  238   2016-05-31   
667-201 9 Bel Air MD BLTMMDCH40Z  238   2016-07-14   
667-206 0 Towson MD BLTMMDCH40Z  238   2013-09-22   
667-206 8 Towson MD BLTMMDCH40Z  238   2013-12-27   
667-207 1 Baltimore MD BLTMMDCH40Z  238   2013-12-27   
667-207 3 Baltimore MD BLTMMDCH40Z  238   2013-12-27   
667-207 4 Baltimore MD BLTMMDCH40Z  238   2013-12-27   
667-207 5 Baltimore MD BLTMMDCH40Z  238   2013-12-27   
667-207 9 Baltimore MD BLTMMDCH40Z  238   2015-04-12   
667-212 1 Baltimore MD BLTMMDCH40Z  238   2014-09-04   
667-212 6 Baltimore MD BLTMMDCH40Z  238   2014-09-04   
667-212 7 Baltimore MD BLTMMDCH40Z  238   2014-09-04   
667-212 8 Baltimore MD BLTMMDCH40Z  238   2014-09-04   
667-212 9 Baltimore MD BLTMMDCH40Z  238   2014-09-04   
667-213 7 Baltimore MD BLTMMDCH40Z  238   2014-09-04   
667-213 8 Baltimore MD BLTMMDCH40Z  238   2014-09-04   
667-213 9 Baltimore MD BLTMMDCH40Z  238   2014-09-04   
667-214 3 Baltimore MD BLTMMDCH40Z  238   2014-10-22   
667-214 4 Baltimore MD BLTMMDCH40Z  238   2014-10-22   
667-214 5 Baltimore MD BLTMMDCH40Z  238   2014-10-22   
667-214 6 Baltimore MD BLTMMDCH40Z  238   2014-10-22   
667-214 7 Baltimore MD BLTMMDCH40Z  238   2014-10-22   
667-214 8 Baltimore MD BLTMMDCH40Z  238   2014-11-08   
667-214 9 Baltimore MD BLTMMDCH40Z  238   2014-11-08   
667-216 1 Baltimore MD BLTMMDCH40Z  238   2014-11-08   
667-216 2 Baltimore MD BLTMMDCH40Z  238   2014-11-08   
667-216 3 Baltimore MD BLTMMDCH40Z  238   2014-12-13   
667-216 4 Baltimore MD BLTMMDCH40Z  238   2014-12-13   
667-216 5 Baltimore MD BLTMMDCH40Z  238   2014-12-13   
667-216 6 Baltimore MD BLTMMDCH40Z  238   2014-12-13   
667-216 7 Baltimore MD BLTMMDCH40Z  238   2014-12-13   
667-216 8 Baltimore MD BLTMMDCH40Z  238   2014-12-13   
667-216 9 Baltimore MD BLTMMDCH40Z  238   2014-12-13   
667-217 7 Baltimore MD BLTMMDCH40Z  238   2015-02-14   
667-217 8 Baltimore MD BLTMMDCH40Z  238   2015-02-14   
667-217 9 Baltimore MD BLTMMDCH40Z  238   2015-02-14   
667-218 1 Baltimore MD BLTMMDCH40Z  238   2015-02-14   
667-218 8 Baltimore MD BLTMMDCH40Z  238   2015-04-12   
667-218 9 Baltimore MD BLTMMDCH40Z  238   2015-04-12   
667-219 1 Baltimore MD BLTMMDCH40Z  238   2015-04-12   

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Last updated: Sun, 07 Feb 2021 01:52:50 UTC

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