TelcoData.US: Search by Area Code / Exchange

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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
630-456	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	WHEATON	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))
630-456 is split into 1,000-number blocks - detail below
630-456-0XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WHEATON	CHCGILMFCM2	06/22/2005	Prefix Type: PCS Switch Name: CHICAGO Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMFCM2))
630-456-1XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WHEATON	CHCGILMFCM2	07/09/2004	Prefix Type: PCS Switch Name: CHICAGO Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMFCM2))
630-456-2XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WHEATON	CHCGILMFCM2	06/22/2005	Prefix Type: PCS Switch Name: CHICAGO Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMFCM2))
630-456-3XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WHEATON	CHCGILMFCM2	01/13/2005	Prefix Type: PCS Switch Name: CHICAGO Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMFCM2))
630-456-4XXX	IL	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WHEATON	CHCGILNEXJX	01/15/2003	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILNEXJX))
630-456-5XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WHEATON	CHCGILMFCM2	07/21/2006	Prefix Type: PCS Switch Name: CHICAGO Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMFCM2))
630-456-6XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WHEATON	CHCGILMFCM2	01/18/2006	Prefix Type: PCS Switch Name: CHICAGO Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMFCM2))
630-456-7XXX	IL	FIRST COMMUNICATIONS, LLC	0003764487	RMD0014015	460K	WHEATON	CHCGILWUX6X	06/16/2004	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILWUX6X))
630-456-8XXX	IL	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	WHEATON	CHCGILMFCM2	05/19/2006	Prefix Type: PCS Switch Name: CHICAGO Switch Type: N/A LATA: Chicago IL METRO (358) Tandem: N/A 🔧 Explore Switch(CLLI: CHCGILMFCM2))
630-456-9XXX	IL	TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)	0004274114	RMD0003897	7136	WHEATON	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))