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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
847-964	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	DEERFIELD	CHCGIL24DS0	05/01/2001	Prefix Type: CLEC Switch Name: CHICAGO Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGIL24DS0))
847-964 is split into 1,000-number blocks - detail below
847-964-0XXX	IL	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	DEERFIELD	SCBGILRRGT1	11/20/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: SCBGILRRGT1))
847-964-1XXX	IL	LEVEL 3 COMMUNICATIONS, LLC - IL (Lumen Technologies, Inc)	0015338122	RMD0006112	6115	DEERFIELD	NOCLLIKNOWN	03/01/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
847-964-2XXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	DEERFIELD	CHCGIL24DS0	04/26/2000	Prefix Type: CLEC Switch Name: CHICAGO Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGIL24DS0))
847-964-3XXX	IL	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	DEERFIELD	SCBGILRRGT1	01/20/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: SCBGILRRGT1))
847-964-4XXX	IL	ILLINOIS BELL TEL CO (AT&T)		N/A	9329	DEERFIELD	DRFDILDFDS0	08/01/2002	Prefix Type: RBOC Switch Name: DEERFIELD Switch Type: 5ESS LATA: Chicago IL METRO (358) Tandem: CHCGILNE20T 🔧 Explore Switch(CLLI: DRFDILDFDS0))
847-964-5XXX	IL	FIRST COMMUNICATIONS, LLC	0003764487	RMD0014015	460K	DEERFIELD	CHCGILWUX6X	04/30/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILWUX6X))
847-964-6XXX	IL	ILLINOIS BELL TEL CO (AT&T)		N/A	9329	DEERFIELD	DRFDILDFDS0	08/01/2002	Prefix Type: RBOC Switch Name: DEERFIELD Switch Type: 5ESS LATA: Chicago IL METRO (358) Tandem: CHCGILNE20T 🔧 Explore Switch(CLLI: DRFDILDFDS0))
847-964-7XXX	IL	ILLINOIS BELL TEL CO (AT&T)		N/A	9329	DEERFIELD	DRFDILDFDS0	08/01/2002	Prefix Type: RBOC Switch Name: DEERFIELD Switch Type: 5ESS LATA: Chicago IL METRO (358) Tandem: CHCGILNE20T 🔧 Explore Switch(CLLI: DRFDILDFDS0))
847-964-8XXX	IL	ILLINOIS BELL TEL CO (AT&T)		N/A	9329	DEERFIELD	DRFDILDFDS0	08/01/2002	Prefix Type: RBOC Switch Name: DEERFIELD Switch Type: 5ESS LATA: Chicago IL METRO (358) Tandem: CHCGILNE20T 🔧 Explore Switch(CLLI: DRFDILDFDS0))
847-964-9XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DEERFIELD	NOCLLIKNOWN	07/23/2012	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))