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npa-nxxState/ProvinceCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
443-505MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)0015338122RMD00061126119ESSEXBLTOMDXIDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDXIDS0))
443-505 is split into 1,000-number blocks - detail below
443-505-0XXXMDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036ESSEXCLMAMDORGT004/21/2025Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDORGT0))
443-505-1XXXMDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036ESSEXCLMAMDORGT004/21/2025Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDORGT0))
443-505-2XXXMDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)0015338122RMD00061126119ESSEXBLTOMDXIDS012/01/2011Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDXIDS0))
443-505-3XXXMDCOMCAST IP PHONE, LLC (Comcast)0008497687RMD0003552318JESSEXBLTMMDCHXFX03/10/2014Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCHXFX))
443-505-4XXXMDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036ESSEXCLMAMDORGT009/03/2025Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDORGT0))
443-505-5XXXMDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036ESSEXCLMAMDORGT012/27/2024Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDORGT0))
443-505-6XXXMDBANDWIDTH.COM CLEC, LLC - MD0017042060RMD0003709071FESSEXNOCLLIKNOWN09/19/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-505-7XXXMDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)0015338122RMD00061126119ESSEXBLTOMDXIDS005/06/2008Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDXIDS0))
443-505-8XXXMDCOMCAST IP PHONE, LLC (Comcast)0008497687RMD0003552318JESSEXBLTMMDCHXFX08/28/2014Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCHXFX))
443-505-9XXXMDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)N/A6855ESSEXBLTMMDCHXWY09/10/2019Prefix Type: PCS
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCHXWY))