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npa-nxxState/ProvinceCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
443-594MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)N/A6119SPARROWSPTBLTOMDXIDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDXIDS0))
443-594 is split into 1,000-number blocks - detail below
443-594-0XXXMDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)N/A6855SPARROWSPTNOCLLIKNOWN07/01/2025Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-594-1XXXMDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)N/A6855SPARROWSPTNOCLLIKNOWN11/26/2025Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-594-2XXXMDBANDWIDTH.COM CLEC, LLC - MD0017042060RMD0003709071FSPARROWSPTNOCLLIKNOWN01/12/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-594-3XXXMDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)0004999405RMD00029577228SPARROWSPTBLTOMDKHDS009/11/2008Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDKHDS0))
443-594-4XXXMDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)N/A6855SPARROWSPTNOCLLIKNOWN11/26/2025Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-594-5XXXMDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)N/A6119SPARROWSPTBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDXIDS0))
443-594-6XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DSPARROWSPTNOCLLIKNOWN09/12/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-594-7XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DSPARROWSPTNOCLLIKNOWN02/25/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-594-8XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DSPARROWSPTNOCLLIKNOWN02/25/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-594-9XXXMDIP HORIZON LLCRMD0001571515JSPARROWSPTNOCLLIKNOWN09/15/2016Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
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