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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
419-660	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NORWALK	NRWLOHXADS0	00/00/0000	Prefix Type: ICO Switch Name: NORWALK MAIN Switch Type: GTD5EAX LATA: Toledo OH (326) Tandem: NRWLOHXA51T 🔧 Explore Switch(CLLI: NRWLOHXADS0))
419-660 is split into 1,000-number blocks - detail below
419-660-0XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NORWALK	NRWLOHXADS0	N/A	Prefix Type: ICO Switch Name: NORWALK MAIN Switch Type: GTD5EAX LATA: Toledo OH (326) Tandem: NRWLOHXA51T 🔧 Explore Switch(CLLI: NRWLOHXADS0))
419-660-1XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NORWALK	NRWLOHXADS0	N/A	Prefix Type: ICO Switch Name: NORWALK MAIN Switch Type: GTD5EAX LATA: Toledo OH (326) Tandem: NRWLOHXA51T 🔧 Explore Switch(CLLI: NRWLOHXADS0))
419-660-2XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NORWALK	NRWLOHXADS0	N/A	Prefix Type: ICO Switch Name: NORWALK MAIN Switch Type: GTD5EAX LATA: Toledo OH (326) Tandem: NRWLOHXA51T 🔧 Explore Switch(CLLI: NRWLOHXADS0))
419-660-3XXX	OH	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	NORWALK	NOCLLIKNOWN	12/10/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Toledo OH (326) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
419-660-4XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NORWALK	NRWLOHXADS0	N/A	Prefix Type: ICO Switch Name: NORWALK MAIN Switch Type: GTD5EAX LATA: Toledo OH (326) Tandem: NRWLOHXA51T 🔧 Explore Switch(CLLI: NRWLOHXADS0))
419-660-5XXX	OH	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH (Verizon Communications)	0004999405	RMD0002957	7158	NORWALK	TOLDOHOZDS0	08/24/2004	Prefix Type: CLEC Switch Name: TOLEDO Switch Type: N/A LATA: Toledo OH (326) Tandem: N/A 🔧 Explore Switch(CLLI: TOLDOHOZDS0))
419-660-6XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NORWALK	NRWLOHXADS0	N/A	Prefix Type: ICO Switch Name: NORWALK MAIN Switch Type: GTD5EAX LATA: Toledo OH (326) Tandem: NRWLOHXA51T 🔧 Explore Switch(CLLI: NRWLOHXADS0))
419-660-8XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NORWALK	NRWLOHXADS0	N/A	Prefix Type: ICO Switch Name: NORWALK MAIN Switch Type: GTD5EAX LATA: Toledo OH (326) Tandem: NRWLOHXA51T 🔧 Explore Switch(CLLI: NRWLOHXADS0))
419-660-9XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NORWALK	NRWLOHXADS0	N/A	Prefix Type: ICO Switch Name: NORWALK MAIN Switch Type: GTD5EAX LATA: Toledo OH (326) Tandem: NRWLOHXA51T 🔧 Explore Switch(CLLI: NRWLOHXADS0))