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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
406-970	MT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	BILLINGS	BLNGMTWE8MD	06/03/2016	Prefix Type: IPES Switch Name: BILLINGS Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTWE8MD)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970 is split into 1,000-number blocks - detail below
406-970-0XXX	MT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT (Verizon Communications)	0003290673	RMD0003382	6564	BILLINGS	BLNGMTWEIMD	03/27/2019	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTWEIMD)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-1XXX	MT	NUSO, LLC	0028048908	RMD0001599	551G	BILLINGS	NOCLLIKNOWN	09/18/2017	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-2XXX	MT	BANDWIDTH.COM CLEC, LLC - MT (Bandwidth Inc.)	0017042060	RMD0003709	994E	BILLINGS	NOCLLIKNOWN	09/22/2022	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-3XXX	MT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT (Verizon Communications)	0003290673	RMD0003382	6564	BILLINGS	BLNGMTWEIMD	02/26/2020	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTWEIMD)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-4XXX	MT	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	BILLINGS	BLNGMTVR1MD	07/26/2021	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTVR1MD)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-5XXX	MT	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	BILLINGS	BLNGMTVR1MD	07/26/2021	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTVR1MD)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-6XXX	MT	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	BILLINGS	BLNGMTVR1MD	07/26/2021	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTVR1MD)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-7XXX	MT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	BILLINGS	BLNGMTWE8MD	06/07/2016	Prefix Type: IPES Switch Name: BILLINGS Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTWE8MD)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-8XXX	MT	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	BILLINGS	BLNGMTVR1MD	05/12/2021	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTVR1MD)) 🕘 Prefix History 🔎 Explore Carrier Information
406-970-9XXX	MT	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	BILLINGS	BLNGMTVR1MD	05/12/2021	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A 🔧 Explore Switch(CLLI: BLNGMTVR1MD)) 🕘 Prefix History 🔎 Explore Carrier Information