TelcoData.US: Search for Area Codes / Exchanges by Rate Center & State

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npa-nxx	State	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
337-320	LA	VOICESTREAM GSM I, LLC (T-Mobile)		N/A	150C	OBERLIN	LFYTLA360MD	03/19/2004	Prefix Type: PCS Switch Name: LAFAYETTE Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: LFYTLA360MD))
337-320 is split into 1,000-number blocks - detail below
337-320-0XXX	LA	VOICESTREAM GSM I, LLC (T-Mobile)		N/A	150C	OBERLIN	LFYTLA360MD	11/16/2022	Prefix Type: PCS Switch Name: LAFAYETTE Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: LFYTLA360MD))
337-320-1XXX	LA	VOICESTREAM GSM I, LLC (T-Mobile)		N/A	150C	OBERLIN	LFYTLA360MD	N/A	Prefix Type: PCS Switch Name: LAFAYETTE Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: LFYTLA360MD))
337-389	LA	VOICESTREAM GSM I, LLC (T-Mobile)		N/A	150C	OBERLIN	LFYTLA360MD	03/19/2004	Prefix Type: PCS Switch Name: LAFAYETTE Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: LFYTLA360MD))
337-389 is split into 1,000-number blocks - detail below
337-389-1XXX	LA	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	OBERLIN	NOCLLIKNOWN	12/11/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
337-389-6XXX	LA	TELEPORT COMMUNICATIONS AMERICA LA - LLC (AT&T)		N/A	653C	OBERLIN	NOCLLIKNOWN	05/14/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
337-389-7XXX	LA	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	OBERLIN	LFYTLAMAXUY	08/08/2014	Prefix Type: IPES Switch Name: LAFAYETTE Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: LFYTLAMAXUY))
337-639	LA	BRIGHTSPEED OF LOUISIANA, LLC (Lumen Technologies, Inc)	0005786223	RMD0006244	0434	OBERLIN	OBRLLAXADS0	00/00/0000	Prefix Type: ICO Switch Name: OBERLIN Switch Type: Stromberg Carlson DCO Digital LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: OBRLLAXADS0))
337-977	LA	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA (Verizon Wireless)	0003290673	RMD0003382	6505	OBERLIN	LFYTLA18X1X	03/16/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: LFYTLA18X1X))
337-977 is split into 1,000-number blocks - detail below
337-977-1XXX	LA	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA (Verizon Wireless)	0003290673	RMD0003382	6505	OBERLIN	LFYTLA18X1X	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: LFYTLA18X1X))
337-977-7XXX	LA	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	OBERLIN	NOCLLIKNOWN	04/23/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
337-977-8XXX	LA	LEVEL 3 COMMUNICATIONS, LLC - LA (Lumen Technologies, Inc)	0015338122	RMD0006112	3232	OBERLIN	NOCLLIKNOWN	01/20/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Lafayette LA (488) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))