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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
630-541-XXXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	DOWNERSGRV	OKBRILOADC2	00/00/0000	Prefix Type: CLEC Switch Name: OAK BROOK Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: OKBRILOADC2))
630-541 is split into 1,000-number blocks - detail below
630-541-0XXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	DOWNERSGRV	OKBRILOADC2	N/A	Prefix Type: CLEC Switch Name: OAK BROOK Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: OKBRILOADC2))
630-541-1XXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	DOWNERSGRV	OKBRILOADC2	N/A	Prefix Type: CLEC Switch Name: OAK BROOK Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: OKBRILOADC2))
630-541-2XXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	DOWNERSGRV	OKBRILOADC2	N/A	Prefix Type: CLEC Switch Name: OAK BROOK Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: OKBRILOADC2))
630-541-3XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DOWNERSGRV	CHCGILNEXJX	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILNEXJX))
630-541-4XXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	DOWNERSGRV	OKBRILOADC2	N/A	Prefix Type: CLEC Switch Name: OAK BROOK Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: OKBRILOADC2))
630-541-5XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DOWNERSGRV	CHCGILNEXJX	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILNEXJX))
630-541-6XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DOWNERSGRV	CHCGILNEXJX	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILNEXJX))
630-541-7XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DOWNERSGRV	CHCGILNEXJX	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILNEXJX))
630-541-8XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DOWNERSGRV	CHCGILNEXJX	09/06/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILNEXJX))
630-541-9XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DOWNERSGRV	CHCGILNEXJX	09/06/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILNEXJX))