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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
443-231MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325ESSEXBLTMMDCHCMD00/00/0000Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-231
443-231-0MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119ESSEXNOCLLIKNOWN02/01/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-1MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697ESSEXNOCLLIKNOWN04/04/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-2MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325ESSEXBLTMMDCHCMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-3MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119ESSEXNOCLLIKNOWN03/29/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-4MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119ESSEXNOCLLIKNOWN01/27/2003Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-5MDCOMCAST IP PHONE, LLC318JESSEXBLTMMDCHXFX02/11/2005Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-6MDCOMCAST IP PHONE, LLC318JESSEXBLTMMDCHXFX05/22/2006Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-7MDCOMCAST IP PHONE, LLC318JESSEXBLTMMDCHXFX05/22/2006Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-8MDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)6855ESSEXBLTMMDCHXWY07/26/2006Prefix Type: PCS
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-231-9MDIP HORIZON LLC515JESSEXNOCLLIKNOWN05/03/2016Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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