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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
206-687	WA	ONVOY, LLC - WA (Sinch)	0004323028	RMD0001966	483E	SEATTLE	STTLWAWBX6Z	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWAWBX6Z))
206-687 is split into 1,000-number blocks - detail below
206-687-0XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0006945950	RMD0004209	6529	SEATTLE	STTLWA060MD	09/24/2010	Prefix Type: PCS Switch Name: SEATTLE Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWA060MD))
206-687-1XXX	WA	ONVOY, LLC - WA (Sinch)	0004323028	RMD0001966	483E	SEATTLE	STTLWAWBX6Z	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWAWBX6Z))
206-687-2XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0006945950	RMD0004209	6529	SEATTLE	STTLWA060MD	06/09/2011	Prefix Type: PCS Switch Name: SEATTLE Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWA060MD))
206-687-3XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0006945950	RMD0004209	6529	SEATTLE	STTLWA060MD	06/09/2011	Prefix Type: PCS Switch Name: SEATTLE Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWA060MD))
206-687-4XXX	WA	ONVOY, LLC - WA (Sinch)	0004323028	RMD0001966	483E	SEATTLE	STTLWAWBX6Z	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWAWBX6Z))
206-687-5XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0006945950	RMD0004209	6529	SEATTLE	STTLWA060MD	07/13/2011	Prefix Type: PCS Switch Name: SEATTLE Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWA060MD))
206-687-6XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0006945950	RMD0004209	6529	SEATTLE	STTLWA060MD	07/13/2011	Prefix Type: PCS Switch Name: SEATTLE Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWA060MD))
206-687-7XXX	WA	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	SEATTLE	STTLWA03X1X	02/09/2011	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWA03X1X))
206-687-8XXX	WA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0006945950	RMD0004209	6529	SEATTLE	STTLWA060MD	07/13/2011	Prefix Type: PCS Switch Name: SEATTLE Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWA060MD))
206-687-9XXX	WA	ONVOY, LLC - WA (Sinch)	0004323028	RMD0001966	483E	SEATTLE	STTLWAWBX6Z	12/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Seattle WA (674) Tandem: N/A 🔧 Explore Switch(CLLI: STTLWAWBX6Z))