Local Calling Guide

Area code/prefix search

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Sykesville, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-398 9   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-516 A BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-516 0   145J TERRA NOVA TELECOM INC. 238      
443-516 2 BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-516 3   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-516 4 BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-516 5   568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-516 6 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-516 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-516 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-516 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-609 A HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-609 0 HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-609 1 CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-609 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-609 3 BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-609 4 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-609 5 BLTMMDCHX7X  073H TELNYX LLC 238      
443-609 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-609 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-609 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-609 9 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-920 A CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-920 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-920 1   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-920 2   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-920 3 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-920 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-920 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-920 6   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-920 7 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-920 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-920 9 CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-339 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 0 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 1 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 4 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 5 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 6 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-478 A   876D ONVOY, LLC - MD 238   2024-05-12   
667-478 0   876D ONVOY, LLC - MD 238      
667-478 1   876D ONVOY, LLC - MD 238      
667-478 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      

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

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