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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
419-257	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	00/00/0000	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))
419-257 is split into 1,000-number blocks - detail below
419-257-0XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	N/A	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))
419-257-1XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	N/A	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))
419-257-2XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	N/A	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))
419-257-3XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	N/A	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))
419-257-4XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	N/A	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))
419-257-5XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	N/A	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))
419-257-6XXX	OH	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH (Verizon Communications)	0004999405	RMD0002957	7158	NO BALTIMR	TOLDOHOZDS0	11/24/2004	Prefix Type: CLEC Switch Name: TOLEDO Switch Type: N/A LATA: Toledo OH (326) Tandem: N/A 🔧 Explore Switch(CLLI: TOLDOHOZDS0))
419-257-7XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	N/A	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))
419-257-8XXX	OH	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	NO BALTIMR	NOCLLIKNOWN	06/21/2021	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Toledo OH (326) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
419-257-9XXX	OH	FRONTIER NORTH, INC. - OH (Frontier Communications)		N/A	0615	NO BALTIMR	NBLTOHXARS0	N/A	Prefix Type: ICO Switch Name: NORTH BALTIMORE Switch Type: AE-RSU LATA: Toledo OH (326) Tandem: BWLGOHXA51T 🔧 Explore Switch(CLLI: NBLTOHXARS0))