Local Calling Guide

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Switch: BLTMMDDN

Switch (link to prefixes) Switch name Company
BLTMMDDN00W BALTIMORE   
BLTMMDDN2MD   508J CENTURYLINK COMMUNICATIONS, LLC 
BLTMMDDN4MD   2554 GLOBAL NAPS SOUTH, INC. - MD 
BLTMMDDNDS2 BALTIMORE  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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