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
301-549	MD	VERIZON MARYLAND, INC. (Verizon Communications)	0002166825	RMD0002941	9212	ASHTON236	LARLMDLRDS0	00/00/0000	Prefix Type: RBOC Switch Name: LAUREL Switch Type: WECO 5ESS (Digital) LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: LARLMDLRDS0))
301-549 is split into 1,000-number blocks - detail below
301-549-0XXX	MD	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)		N/A	6855	ASHTON236	BTVLMD12CMA	08/22/2014	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: BTVLMD12CMA))
301-549-1XXX	MD	VERIZON MARYLAND, INC. (Verizon Communications)	0002166825	RMD0002941	9212	ASHTON236	LARLMDLRDS0	N/A	Prefix Type: RBOC Switch Name: LAUREL Switch Type: WECO 5ESS (Digital) LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: LARLMDLRDS0))
301-549-2XXX	MD	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)		N/A	6855	ASHTON236	BTVLMD12CMA	11/24/2017	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: BTVLMD12CMA))
301-549-3XXX	MD	VERIZON MARYLAND, INC. (Verizon Communications)	0002166825	RMD0002941	9212	ASHTON236	LARLMDLRDS0	N/A	Prefix Type: RBOC Switch Name: LAUREL Switch Type: WECO 5ESS (Digital) LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: LARLMDLRDS0))
301-549-4XXX	MD	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)		N/A	6855	ASHTON236	LARLMDLRDS0	01/08/2018	Prefix Type: PCS Switch Name: LAUREL Switch Type: WECO 5ESS (Digital) LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: LARLMDLRDS0))
301-549-5XXX	MD	IP HORIZON LLC		RMD0001571	515J	ASHTON236	NOCLLIKNOWN	02/19/2015	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
301-549-6XXX	MD	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)		N/A	6855	ASHTON236	BTVLMD12CMA	11/24/2017	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: BTVLMD12CMA))
301-549-7XXX	MD	PAETEC ITEL, LLC		N/A	829J	ASHTON236	HRNDVACKBMD	10/20/2011	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: HRNDVACKBMD))
301-549-8XXX	MD	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)		N/A	6855	ASHTON236	BTVLMD12CMA	08/22/2014	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: BTVLMD12CMA))
301-549-9XXX	MD	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)		N/A	6855	ASHTON236	BTVLMD12CMA	08/22/2014	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: BTVLMD12CMA))