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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
662-644	MS	LEVEL 3 COMMUNICATIONS, LLC - MS (Lumen Technologies, Inc)	0015338122	RMD0006112	5178	GREENWOOD	JCSNMSHA2MD	05/07/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMSHA2MD))
662-644 is split into 1,000-number blocks - detail below
662-644-0XXX	MS	LEVEL 3 COMMUNICATIONS, LLC - MS (Lumen Technologies, Inc)	0015338122	RMD0006112	5178	GREENWOOD	JCSNMSHA2MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMSHA2MD))
662-644-2XXX	MS	LEVEL 3 COMMUNICATIONS, LLC - MS (Lumen Technologies, Inc)	0015338122	RMD0006112	5178	GREENWOOD	JCSNMSHA2MD	06/18/2018	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMSHA2MD))
662-644-4XXX	MS	LEVEL 3 COMMUNICATIONS, LLC - MS (Lumen Technologies, Inc)	0015338122	RMD0006112	5178	GREENWOOD	JCSNMSHA2MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMSHA2MD))
662-644-5XXX	MS	AT&T ENTERPRISES, LLC (AT&T)	0035146430	RMD0022433	516C	GREENWOOD	NOCLLIKNOWN	07/08/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
662-644-6XXX	MS	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	GREENWOOD	NOCLLIKNOWN	04/13/2016	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))