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.

Washington Zone 10, MD

1 2 3 4 5 6 7 8 9 10 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
227-202 A BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 0 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 1 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 2 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 3 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 4 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 5 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 6 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 7 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 8 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-202 9 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-204 A BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-204 0 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-204 1 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-204 2 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-204 3 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-204 4 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-204 5 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-204 6 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-204 7 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-204 8 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-204 9 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-216 A BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 0 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 1 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 2 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 3 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 4 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 5 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 6 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 7 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 8 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-216 9 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 A   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-05-02   
227-236 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 2   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
227-236 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-236 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-241 A   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-07-07   
227-241 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-241 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-241 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-241 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-241 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-241 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-241 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-241 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-241 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-241 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-250 A   876D ONVOY, LLC - MD 236   2024-09-21   
227-250 0   876D ONVOY, LLC - MD 236      
227-250 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-250 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
227-250 3   071F BANDWIDTH.COM CLEC, LLC - MD 236      
227-250 4   071F BANDWIDTH.COM CLEC, LLC - MD 236      
227-250 5   071F BANDWIDTH.COM CLEC, LLC - MD 236      
227-250 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-250 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-250 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-250 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-251 A   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-11-22   
227-251 0   876D ONVOY, LLC - MD 236      
227-251 1   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
227-251 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-251 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-251 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-251 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-251 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-254 A   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2024-11-25   
227-254 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-254 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-254 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-254 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-254 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
227-999 A WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236      
227-999 0   876D ONVOY, LLC - MD 236      
227-999 1   876D ONVOY, LLC - MD 236      
227-999 2   876D ONVOY, LLC - MD 236      
227-999 3   876D ONVOY, LLC - MD 236      
227-999 4 VINNVACBDS0  624H ONVOY SPECTRUM, LLC 236      
227-999 5 VINNVACBDS0  624H ONVOY SPECTRUM, LLC 236      
227-999 6   876D ONVOY, LLC - MD 236      
227-999 7   321J HD CARRIER LLC 236      
227-999 8   876D ONVOY, LLC - MD 236      
227-999 9 WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236      
240-205 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-205 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-205 1 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-205 2 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-205 3 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-205 4 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-205 5 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-205 6 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-205 7 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      

1 2 3 4 5 6 7 8 9 10 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.