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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
603-389	NH	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DURHAM	MNCHNHFWDS1	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: MNCHNHFWDS1)) 🕘 Prefix History 🔎 Explore Carrier Information
603-389 is split into 1,000-number blocks - detail below
603-389-0XXX	NH	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DURHAM	MNCHNHFWDS1	03/13/2001	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: MNCHNHFWDS1)) 🕘 Prefix History 🔎 Explore Carrier Information
603-389-1XXX	NH	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DURHAM	MNCHNHFWDS1	02/08/2005	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: MNCHNHFWDS1)) 🕘 Prefix History 🔎 Explore Carrier Information
603-389-2XXX	NH	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH (Verizon Communications)	0004999405	RMD0002957	7778	DURHAM	NOCLLIKNOWN	06/27/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) 🕘 Prefix History 🔎 Explore Carrier Information
603-389-3XXX	NH	OTEL TELEKOM, INC. - NH		N/A	9827	DURHAM	NOCLLIKNOWN	08/10/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) 🕘 Prefix History 🔎 Explore Carrier Information
603-389-6XXX	NH	LEVEL 3 COMMUNICATIONS, LLC - NH (Lumen Technologies, Inc)	0015338122	RMD0006112	4017	DURHAM	NOCLLIKNOWN	09/03/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) 🕘 Prefix History 🔎 Explore Carrier Information
603-389-7XXX	NH	BELL ATLANTIC MOBILE, INC (Verizon Communications)	0007845035	RMD0003424	6386	DURHAM	NOCLLIKNOWN	10/29/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) 🕘 Prefix History 🔎 Explore Carrier Information
603-389-8XXX	NH	IDT AMERICA, CORP. - NH		N/A	314C	DURHAM	NOCLLIKNOWN	03/20/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) 🕘 Prefix History 🔎 Explore Carrier Information
603-389-9XXX	NH	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DURHAM	MNCHNHFWDS1	08/02/2000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: New Hampshire (122) Tandem: N/A 🔧 Explore Switch(CLLI: MNCHNHFWDS1)) 🕘 Prefix History 🔎 Explore Carrier Information