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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
509-781	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	PROSSER	MLWDWAAA3MD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-781 is split into 1,000-number blocks - detail below
509-781-0XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	PROSSER	MLWDWAAA3MD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-781-1XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	PROSSER	MLWDWAAA3MD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-781-2XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	PROSSER	MLWDWAAA3MD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-781-3XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	PROSSER	MLWDWAAA3MD	12/23/2024	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-781-4XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	PROSSER	MLWDWAAA3MD	12/09/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-781-6XXX	WA	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	PROSSER	NOCLLIKNOWN	05/01/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
509-781-7XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	PROSSER	MLWDWAAA3MD	07/26/2023	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-781-8XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	PROSSER	MLWDWAAA3MD	02/02/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-781-9XXX	WA	ONVOY, LLC - WA (Sinch)	0004323028	RMD0001966	483E	PROSSER	NOCLLIKNOWN	06/01/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))