Input an Area Code (required) followed by the Prefix, or Exchange (optional):
-
If you were a paid member, you could be loading this into any version of Excel or Access (or any other software that understands CSV) right now for less than you paid for your breakfast or lunch today. If you are a member please login to access this and other functionality.
npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
443-231MDTELEPORT COMMUNICATIONS AMERIC (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 - (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 AMERIC (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 - (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 - (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 O (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
443-231-9MDLOCAL ACCESS LLC - MD082HESSEXNOCLLIKNOWN05/03/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Member of The Internet Defense League