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.

Worthington, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-429 A RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-429 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
410-429 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
410-429 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
410-429 3   2593 CORE COMMUNICATIONS, INC.- MD 238      
410-429 4 RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-429 5 RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-429 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
410-429 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
410-429 8 BLTMMDCHX7X  073H TELNYX LLC 238      
410-429 9   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-218 A BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-218 0   145J TERRA NOVA TELECOM INC. 238      
443-218 2 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-218 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-218 4 BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-218 5 BLTMMDCHX7X  073H TELNYX LLC 238      
443-218 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-218 7 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-218 8 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-218 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-222 A   876D ONVOY, LLC - MD 238      
443-222 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-222 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-222 2   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-222 3   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-222 4   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-222 5   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-222 6   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-222 7   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-222 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-222 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-767 A HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-767 0 HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-767 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-767 2   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-767 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-767 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-767 6   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-767 7 PIVLMDPKFMD  9170 BROADVIEW NETWORKS, INC. - MD 238      
443-767 8 HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-767 9 HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-914 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-914 0 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-914 1 CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-914 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-914 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-914 4 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-914 5 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238      
443-914 6 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238      
443-914 7 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-914 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-914 9 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-887 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-887 1 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-887 2 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-887 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-887 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.