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.

Waldorf, MD

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-632 6 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-632 7 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-632 8 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-632 9 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 A WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 0 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 1 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 2 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 3 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 4 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 5 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-638 7 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 8 VINNVACBDS0  876D ONVOY, LLC - MD 236   2019-02-19   
301-638 9 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-643 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-645 A WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-653 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 0 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 1 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 2 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 3 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 6 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 7 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-659 8 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-07-30   
301-659 9 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-02-20   
301-705 A WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 0 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 2 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 3 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 4 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 5 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 6 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 7 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 8 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-705 9 WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-710 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-710 0 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-10-17   
301-710 1 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-12-04   
301-710 2 BTVLMD12CMA  5562 METROPCS, INC. 236   2010-11-10   
301-710 3 BTVLMD12CMA  5562 METROPCS, INC. 236   2010-11-10   
301-710 4 BTVLMD12CMA  5562 METROPCS, INC. 236   2010-11-10   
301-710 5 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-02-20   
301-710 6 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-02-20   
301-710 7 BTVLMD12CMA  5562 METROPCS, INC. 236   2010-11-10   
301-710 8 BTVLMD12CMA  5562 METROPCS, INC. 236   2010-11-10   
301-710 9 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-10-26   

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

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.