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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
509-552	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	CLARKSTON	EWNCWA270MD	00/00/0000	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: EWNCWA270MD))
509-552 is split into 1,000-number blocks - detail below
509-552-0XXX	WA	INLAND CELLULAR LLC	0022355762	RMD0001696	1484	CLARKSTON	NOCLLIKNOWN	05/13/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
509-552-1XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	CLARKSTON	EWNCWA270MD	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: EWNCWA270MD))
509-552-2XXX	WA	INLAND CELLULAR LLC	0022355762	RMD0001696	1484	CLARKSTON	NOCLLIKNOWN	05/13/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
509-552-3XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	CLARKSTON	EWNCWA270MD	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: EWNCWA270MD))
509-552-4XXX	WA	ONVOY, LLC - WA (Sinch)	0004323028	RMD0001966	483E	CLARKSTON	NOCLLIKNOWN	05/27/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
509-552-5XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	CLARKSTON	EWNCWA270MD	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: EWNCWA270MD))
509-552-6XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	CLARKSTON	EWNCWA270MD	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: EWNCWA270MD))
509-552-7XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	CLARKSTON	EWNCWA270MD	12/16/2013	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: EWNCWA270MD))
509-552-8XXX	WA	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	CLARKSTON	SPKNWA01X7X	11/07/2013	Prefix Type: CLEC Switch Name: SPOKANE Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: SPKNWA01X7X))
509-552-9XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	CLARKSTON	EWNCWA270MD	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: EWNCWA270MD))