Local Calling Guide

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Washington Zone 2, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-312 9 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 A CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 0 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 1 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 2 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 3 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 4 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 5 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 6 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 7 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 8 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 9 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-319 A BTHSMDWWDS0  9212 VERIZON MARYLAND, INC. 236      
301-320 A BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-335 A CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 0 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 1 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 2 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 3 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 4 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 5 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 6 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 7 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 8 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 9 CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-347 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-347 0 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-347 1 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-347 2 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-347 3 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-347 4 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-347 5 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-347 6 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2017-01-20   
301-347 7 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2017-09-14   
301-347 8 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2018-10-14   
301-347 9 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-365 A BTHSMDBDDS0  9212 VERIZON MARYLAND, INC. 236      
301-380 A BTHSMDWWDS0  9212 VERIZON MARYLAND, INC. 236      
301-381 A VINNVACBDS0  876D ONVOY, LLC - MD 236      
301-381 0 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 1 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 6 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 8 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-381 9 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-16   
301-385 A CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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