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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
630-445	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	NAPERVILLE	OKBRILOAHMD	00/00/0000	Prefix Type: CLEC Switch Name: OAKBROOK Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: OKBRILOAHMD))
630-445 is split into 1,000-number blocks - detail below
630-445-0XXX	IL	LEVEL 3 COMMUNICATIONS, LLC - IL (Lumen Technologies, Inc)	0015338122	RMD0006112	6115	NAPERVILLE	NOCLLIKNOWN	03/10/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
630-445-1XXX	IL	LEVEL 3 COMMUNICATIONS, LLC - IL (Lumen Technologies, Inc)	0015338122	RMD0006112	6115	NAPERVILLE	NOCLLIKNOWN	04/17/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
630-445-2XXX	IL	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAPERVILLE	CHCGILWUDS0	02/28/2011	Prefix Type: IPES Switch Name: CHICAGO Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILWUDS0))
630-445-3XXX	IL	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (Verizon Wireless)	0003290673	RMD0003382	6333	NAPERVILLE	RVDLILBDAMD	04/21/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: RVDLILBDAMD))
630-445-4XXX	IL	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL (Verizon Communications)	0004999405	RMD0002957	7196	NAPERVILLE	EGVGILIFDS1	02/24/2011	Prefix Type: CLEC Switch Name: ELK GROVE Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: EGVGILIFDS1))
630-445-5XXX	IL	RCN TELECOM SERVICES OF ILLINIOS, INC. - IL		N/A	8702	NAPERVILLE	NOCLLIKNOWN	06/21/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
630-445-6XXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	NAPERVILLE	OKBRILOAHMD	N/A	Prefix Type: CLEC Switch Name: OAKBROOK Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: OKBRILOAHMD))
630-445-7XXX	IL	AT&T - LOCAL (AT&T)		N/A	7421	NAPERVILLE	OKBRILOAHMD	N/A	Prefix Type: CLEC Switch Name: OAKBROOK Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: OKBRILOAHMD ))
630-445-8XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NAPERVILLE	NOCLLIKNOWN	01/24/2013	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
630-445-9XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	NAPERVILLE	CHCGILMF2MD	03/15/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMF2MD))