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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
601-990	MS	TEC OF JACKSON, INC. - MS	0003723780	RMD0002267	3704	BROOKHAVEN	JCSNMS63DS1	05/01/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMS63DS1))
601-990 is split into 1,000-number blocks - detail below
601-990-0XXX	MS	ONVOY, LLC - MS (Sinch)	0004323028	RMD0001966	719E	BROOKHAVEN	NOCLLIKNOWN	03/02/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
601-990-1XXX	MS	TEC OF JACKSON, INC. - MS	0003723780	RMD0002267	3704	BROOKHAVEN	JCSNMS63DS1	05/01/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMS63DS1))
601-990-2XXX	MS	LEVEL 3 COMMUNICATIONS, LLC - MS (Lumen Technologies, Inc)	0015338122	RMD0006112	5178	BROOKHAVEN	NOCLLIKNOWN	07/19/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
601-990-3XXX	MS	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS	0004999405	RMD0002957	4886	BROOKHAVEN	JCSNMSCPXHY	11/30/2006	Prefix Type: CLEC Switch Name: JACKSON Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMSCPXHY))
601-990-4XXX	MS	LEVEL 3 COMMUNICATIONS, LLC - MS (Lumen Technologies, Inc)	0015338122	RMD0006112	5178	BROOKHAVEN	NOCLLIKNOWN	06/25/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
601-990-5XXX	MS	LEVEL 3 COMMUNICATIONS, LLC - MS (Lumen Technologies, Inc)	0015338122	RMD0006112	5178	BROOKHAVEN	NOCLLIKNOWN	05/09/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
601-990-6XXX	MS	ONVOY, LLC - MS (Sinch)	0004323028	RMD0001966	719E	BROOKHAVEN	NOCLLIKNOWN	05/22/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
601-990-7XXX	MS	NEW CINGULAR WIRELESS PCS, LLC - GA (AT&T Wireless)	0003291192	RMD0036909	6214	BROOKHAVEN	JCSNMSQBG02	01/14/2025	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMSQBG02))
601-990-8XXX	MS	NEW CINGULAR WIRELESS PCS, LLC - GA (AT&T Wireless)	0003291192	RMD0036909	6214	BROOKHAVEN	JCSNMSQBG02	01/14/2025	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: JCSNMSQBG02))
601-990-9XXX	MS	ONVOY, LLC - MS (Sinch)	0004323028	RMD0001966	719E	BROOKHAVEN	NOCLLIKNOWN	08/11/2009	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Jackson MS (482) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))