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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
978-631	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	ACTON	CMBRMAORDSG	00/00/0000	Prefix Type: CLEC Switch Name: CAMBRIDGE Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CMBRMAORDSG))
978-631 is split into 1,000-number blocks - detail below
978-631-0XXX	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	ACTON	CMBRMAORDSG	12/02/2004	Prefix Type: CLEC Switch Name: CAMBRIDGE Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CMBRMAORDSG))
978-631-1XXX	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	ACTON	CMBRMAORDSG	06/29/2005	Prefix Type: CLEC Switch Name: CAMBRIDGE Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CMBRMAORDSG))
978-631-2XXX	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	ACTON	CMBRMAORDSG	06/29/2005	Prefix Type: CLEC Switch Name: CAMBRIDGE Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CMBRMAORDSG))
978-631-3XXX	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	ACTON	CMBRMAORDSG	06/29/2005	Prefix Type: CLEC Switch Name: CAMBRIDGE Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CMBRMAORDSG))
978-631-4XXX	MA	LEVEL 3 COMMUNICATIONS, LLC - MA (Lumen Technologies, Inc)		N/A	4018	ACTON	CMBRMAORDSG	03/05/2003	Prefix Type: CLEC Switch Name: CAMBRIDGE Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: CMBRMAORDSG))
978-631-5XXX	MA	OMNIPOINT MIAMI E LICENSE, LLC (T-Mobile US, Inc)		N/A	6889	ACTON	NRTNMAAACM4	09/09/2014	Prefix Type: PCS Switch Name: NORTON Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM4))
978-631-6XXX	MA	OMNIPOINT MIAMI E LICENSE, LLC (T-Mobile US, Inc)		N/A	6889	ACTON	NRTNMAAACM4	01/07/2016	Prefix Type: PCS Switch Name: NORTON Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM4))
978-631-7XXX	MA	OMNIPOINT MIAMI E LICENSE, LLC (T-Mobile US, Inc)		N/A	6889	ACTON	NRTNMAAACM4	01/07/2016	Prefix Type: PCS Switch Name: NORTON Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM4))
978-631-8XXX	MA	OMNIPOINT MIAMI E LICENSE, LLC (T-Mobile US, Inc)		N/A	6889	ACTON	NRTNMAAACM4	08/27/2025	Prefix Type: PCS Switch Name: NORTON Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM4))
978-631-9XXX	MA	OMNIPOINT MIAMI E LICENSE, LLC (T-Mobile US, Inc)		N/A	6889	ACTON	NRTNMAAACM4	08/08/2011	Prefix Type: PCS Switch Name: NORTON Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM4))