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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
224-772	IL	ILLINOIS BELL TEL CO (AT&T)		N/A	9329	WAUKEGAN	NCHCILNCDS0	09/23/2002	Prefix Type: RBOC Switch Name: NORTH CHICAGO DS0 Switch Type: DMS100 LATA: Chicago IL METRO (358) Tandem: CHCGILNE20T 🔧 Explore Switch(CLLI: NCHCILNCDS0))
224-772 is split into 1,000-number blocks - detail below
224-772-0XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WAUKEGAN	CHCGILMF8MD	04/15/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMF8MD))
224-772-1XXX	IL	LEVEL 3 COMMUNICATIONS, LLC - IL (Lumen Technologies, Inc)	0015338122	RMD0006112	6115	WAUKEGAN	NOCLLIKNOWN	08/16/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
224-772-2XXX	IL	ILLINOIS BELL TEL CO (AT&T)		N/A	9329	WAUKEGAN	NCHCILNCDS0	09/25/2002	Prefix Type: RBOC Switch Name: NORTH CHICAGO DS0 Switch Type: DMS100 LATA: Chicago IL METRO (358) Tandem: CHCGILNE20T 🔧 Explore Switch(CLLI: NCHCILNCDS0))
224-772-3XXX	IL	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	WAUKEGAN	SCBGILRRGT1	09/09/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: SCBGILRRGT1))
224-772-4XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WAUKEGAN	CHCGILMF8MD	04/30/2008	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMF8MD))
224-772-5XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WAUKEGAN	CHCGILMF8MD	04/30/2008	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMF8MD))
224-772-6XXX	IL	ONVOY, LLC (Sinch)	0004323028	RMD0001966	224C	WAUKEGAN	NOCLLIKNOWN	10/01/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
224-772-7XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WAUKEGAN	CHCGILMF8MD	05/19/2006	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMF8MD))
224-772-8XXX	IL	LEVEL 3 COMMUNICATIONS, LLC - IL (Lumen Technologies, Inc)	0015338122	RMD0006112	6115	WAUKEGAN	NOCLLIKNOWN	04/15/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
224-772-9XXX	IL	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WAUKEGAN	CHCGILMF5MD	10/19/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMF5MD))