Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Washington Zone 1, DC

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
771-220 4 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-03-11   
771-220 5 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-03-11   
771-220 6 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-03-11   
771-220 7 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-03-11   
771-220 8 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-03-17   
771-220 9 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-03-17   
771-221 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
771-221 0 WASKDCFNAMD  6402 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 236   2023-11-23   
771-221 1 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-04   
771-221 2 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-04   
771-221 3 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-04   
771-221 4 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-04   
771-221 5 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-04   
771-221 6 OCQNVAXAVMD  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2023-03-05   
771-221 7 OCQNVAXAVMD  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2023-03-05   
771-221 8 OCQNVAXAVMD  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2023-03-05   
771-221 9 OCQNVAXAVMD  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2023-03-05   
771-222 A   6402 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 236      
771-222 0 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-222 1 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-222 2 WASKDCFNAMD  6402 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 236   2025-01-06   
771-222 3 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-222 4 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-222 5 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-222 6 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-222 7 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-222 8 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-222 9 WASHDC127MD  073H TELNYX LLC 236   2022-07-22   
771-223 A WASHDC12UMD  616J LEAP TELECOM, LLC 236      
771-223 0 WASHDC12UMD  616J LEAP TELECOM, LLC 236   2023-04-20   
771-223 1 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-06-11   
771-223 2 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-06-11   
771-223 3 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-06-11   
771-223 4 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-06-11   
771-223 5 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-06-11   
771-223 6 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-06-11   
771-223 7 WASKDCFNAMD  6402 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 236   2023-10-16   
771-223 8 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-09-08   
771-223 9 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-09-08   
771-224 A WASHDC12X0X  598J FIVE9, INC. 236      
771-224 0 WASHDC12X0X  598J FIVE9, INC. 236   2023-04-29   
771-224 1 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-02   
771-224 2 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-02   
771-224 3 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-02   
771-224 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-02   
771-224 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-02   
771-224 6 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-02   
771-224 7 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-02   
771-224 8 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-09-08   
771-224 9 VINNVACBDS0  850D ONVOY, LLC - DC 236   2023-09-08   
771-225 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
771-225 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-225 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
771-226 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-226 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
771-227 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-227 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
771-228 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-228 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-05-28   
771-229 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
771-229 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-06-01   
771-229 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-06-01   
771-229 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-06-01   
771-229 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-06-01   
771-229 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-06-01   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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