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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
443-552MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDMDDS000/00/0000Prefix Type: RBOC
Switch Name: MADISON
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-552
443-552-0MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119BALTIMORENOCLLIKNOWN04/20/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-1MDCOMCAST IP PHONE, LLC (Comcast)318JBALTIMORENOCLLIKNOWN12/17/2015Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDMDDS0N/APrefix Type: RBOC
Switch Name: MADISON
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-3MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119BALTIMORENOCLLIKNOWN04/20/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-4MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119BALTIMORENOCLLIKNOWN04/20/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-5MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119BALTIMORENOCLLIKNOWN04/20/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-6MDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)6855BALTIMOREBLTMMDCH40Z03/23/2005Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-7MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119BALTIMORENOCLLIKNOWN04/20/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-8MDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)6855BALTIMOREBLTMMDCH40Z03/23/2005Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-552-9MDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)6855BALTIMOREBLTMMDCH40Z08/24/2005Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info