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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
406-609	MT	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	KALISPELL	MSSLMTAG5MD	03/24/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: MSSLMTAG5MD))
406-609 is split into 1,000-number blocks - detail below
406-609-0XXX	MT	ONVOY, LLC - MT (Sinch)	0004323028	RMD0001966	453F	KALISPELL	NOCLLIKNOWN	06/07/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
406-609-1XXX	MT	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	KALISPELL	MSSLMTAG5MD	11/21/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: MSSLMTAG5MD))
406-609-2XXX	MT	ONVOY, LLC - MT (Sinch)	0004323028	RMD0001966	453F	KALISPELL	NOCLLIKNOWN	06/07/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
406-609-3XXX	MT	ONVOY, LLC - MT (Sinch)	0004323028	RMD0001966	453F	KALISPELL	NOCLLIKNOWN	06/07/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
406-609-4XXX	MT	LEVEL 3 COMMUNICATIONS, LLC - MT (Lumen Technologies, Inc)		N/A	9415	KALISPELL	NOCLLIKNOWN	09/10/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
406-609-5XXX	MT	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	KALISPELL	NOCLLIKNOWN	09/08/2022	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
406-609-6XXX	MT	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	KALISPELL	NOCLLIKNOWN	05/27/2021	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
406-609-7XXX	MT	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	KALISPELL	NOCLLIKNOWN	05/27/2021	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
406-609-8XXX	MT	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	KALISPELL	MSSLMTAG5MD	03/25/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: MSSLMTAG5MD))
406-609-9XXX	MT	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	KALISPELL	MSSLMTAG5MD	03/25/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A 🔧 Explore Switch(CLLI: MSSLMTAG5MD))