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 16, MD

1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
227-222 A WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236      
227-222 0   876D ONVOY, LLC - MD 236      
227-222 1   071F BANDWIDTH.COM CLEC, LLC - MD 236      
227-222 2 WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236      
227-222 3 VINNVACBDS0  624H ONVOY SPECTRUM, LLC 236      
227-222 4 VINNVACBDS0  624H ONVOY SPECTRUM, LLC 236      
227-222 7   321J HD CARRIER LLC 236      
227-222 9   876D ONVOY, LLC - MD 236      
240-244 A LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
240-244 0 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-244 1 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-244 2 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-244 3 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-244 4 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-244 5 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-244 6 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-244 7 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-244 8 LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
240-244 9 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-269 A SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-269 0 WASHDC12KMD  145J TERRA NOVA TELECOM INC. 236      
240-269 1 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-269 2 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-269 3 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-269 4 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-269 5 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-269 6 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-269 7 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-269 8 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      
240-269 9 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-303 A HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-303 0 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-303 1 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-303 2 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-303 3 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-303 4 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-303 5 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-303 6 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-303 7 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-303 8 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-303 9 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-318 A CLTNMDCLDS0  9212 VERIZON MARYLAND, INC. 236      
240-318 0 CLTNMDCLDS0  9212 VERIZON MARYLAND, INC. 236      
240-318 1 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-318 2 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-318 3 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-318 4 BTVLMD127MD  5562 METROPCS, INC. 236      
240-318 5 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-318 6 BTVLMD127MD  5562 METROPCS, INC. 236      
240-318 7 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-318 8 LARLMDCCDS0  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 236      
240-318 9 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-348 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-348 0   515J IP HORIZON LLC 236      
240-348 1 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-348 2 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-348 3 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-348 4 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-348 5 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-348 6 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-348 7 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-348 8 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-348 9 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-407 A WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-407 0 WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-407 1 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-407 2 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-407 3 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-407 5   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-407 6   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-407 7 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-407 8 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-546 A TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-546 0 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-546 1 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-546 2 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-546 3 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-546 4 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-546 5   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-546 6 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-546 7   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-546 8   515J IP HORIZON LLC 236      
240-546 9   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-846 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 0 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 1 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 2   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-846 3 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-846 4   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-846 5 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-846 6 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 7   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-846 8   515J IP HORIZON LLC 236      
240-846 9   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-897 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-897 0 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      
240-897 1 BTVLMD127MD  5562 METROPCS, INC. 236      
240-897 2   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-897 3 BTVLMD127MD  5562 METROPCS, INC. 236      
240-897 4   2593 CORE COMMUNICATIONS, INC.- MD 236      

1 2 3 >>

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.