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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
217-835	IL	CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (Frontier Communications)		N/A	1183	BENLD	BNLDILXCRS0	00/00/0000	Prefix Type: ICO Switch Name: BENLD Switch Type: WECO 5ESS Remote (5A RSM) LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: BNLDILXCRS0))
217-835 is split into 1,000-number blocks - detail below
217-835-0XXX	IL	CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (Frontier Communications)		N/A	1183	BENLD	BNLDILXCRS0	N/A	Prefix Type: ICO Switch Name: BENLD Switch Type: WECO 5ESS Remote (5A RSM) LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: BNLDILXCRS0))
217-835-1XXX	IL	CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (Frontier Communications)		N/A	1183	BENLD	BNLDILXCRS0	N/A	Prefix Type: ICO Switch Name: BENLD Switch Type: WECO 5ESS Remote (5A RSM) LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: BNLDILXCRS0))
217-835-2XXX	IL	CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (Frontier Communications)		N/A	1183	BENLD	BNLDILXCRS0	N/A	Prefix Type: ICO Switch Name: BENLD Switch Type: WECO 5ESS Remote (5A RSM) LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: BNLDILXCRS0))
217-835-3XXX	IL	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	BENLD	NOCLLIKNOWN	07/09/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
217-835-4XXX	IL	CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (Frontier Communications)		N/A	1183	BENLD	BNLDILXCRS0	N/A	Prefix Type: ICO Switch Name: BENLD Switch Type: WECO 5ESS Remote (5A RSM) LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: BNLDILXCRS0))
217-835-5XXX	IL	LEVEL 3 COMMUNICATIONS, LLC - IL (Lumen Technologies, Inc)		N/A	6115	BENLD	NOCLLIKNOWN	03/16/2022	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
217-835-6XXX	IL	CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (Frontier Communications)		N/A	1183	BENLD	BNLDILXCRS0	N/A	Prefix Type: ICO Switch Name: BENLD Switch Type: WECO 5ESS Remote (5A RSM) LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: BNLDILXCRS0))
217-835-7XXX	IL	CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (Frontier Communications)		N/A	1183	BENLD	BNLDILXCRS0	N/A	Prefix Type: ICO Switch Name: BENLD Switch Type: WECO 5ESS Remote (5A RSM) LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: BNLDILXCRS0))
217-835-8XXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	BENLD	NOCLLIKNOWN	11/09/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
217-835-9XXX	IL	CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (Frontier Communications)		N/A	1183	BENLD	BNLDILXCRS0	N/A	Prefix Type: ICO Switch Name: BENLD Switch Type: WECO 5ESS Remote (5A RSM) LATA: Mattoon IL (976) Tandem: N/A 🔧 Explore Switch(CLLI: BNLDILXCRS0))