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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
857-354	MA	OMNIPOINT MIAMI E LICENSE, LLC (T-Mobile US, Inc)		N/A	6889	BOSTON	NRTNMAAACM4	11/21/2018	Prefix Type: PCS Switch Name: NORTON Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM4))
857-354 is split into 1,000-number blocks - detail below
857-354-0XXX	MA	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA (Verizon Wireless)	0003290673	RMD0003382	6387	BOSTON	CATNMAAKAMD	12/27/2018	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CATNMAAKAMD))
857-354-1XXX	MA	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA (Verizon Wireless)	0003290673	RMD0003382	6387	BOSTON	CATNMAAKAMD	12/27/2018	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CATNMAAKAMD))
857-354-2XXX	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	BOSTON	NOCLLIKNOWN	08/20/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-354-3XXX	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	BOSTON	NOCLLIKNOWN	08/07/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-354-4XXX	MA	TC SYSTEMS, INC.		N/A	7135	BOSTON	NOCLLIKNOWN	05/17/2023	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-354-5XXX	MA	ONVOY, LLC - MA (Sinch)	0004323028	RMD0001966	892D	BOSTON	NOCLLIKNOWN	05/30/2023	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-354-6XXX	MA	BOOST SUBSCRIBERCO L.L.C.	0037698057	RMD0031843	490J	BOSTON	NOCLLIKNOWN	06/27/2024	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-354-7XXX	MA	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BOSTON	CMBSMA01AMD	09/12/2019	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CMBSMA01AMD))
857-354-8XXX	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	BOSTON	NOCLLIKNOWN	08/20/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-354-9XXX	MA	OMNIPOINT MIAMI E LICENSE, LLC (T-Mobile US, Inc)		N/A	6889	BOSTON	NRTNMAAACM4	11/26/2018	Prefix Type: PCS Switch Name: NORTON Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM4))