Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days — NPA 401

ONVOY, LLC - RI 1

New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	401-341	0XXX1XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	NEWPORT	RI
—	401-342	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - RI	4016	BRISTOL	RI
—	401-344	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - RI	4016	NEWPORT	RI
—	401-345	none assigned yet which blocks →	METROPCS, INC.	5562	PROVIDENCE	RI
—	401-348	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WESTERLY	RI
—	401-349	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	CENTREDALE	RI
—	401-350	not yet reported which blocks →	BANDWIDTH.COM CLEC, LLC - RI	003F	PROVIDENCE	RI
—	401-351	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	PROVIDENCE	RI
—	401-352	4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	WARWICK	RI
—	401-353	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	PROVIDENCE	RI
—	401-354	1XXX2XXX7XXX9XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	PROVIDENCE	RI
—	401-356	3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	WOONSOCKET	RI
—	401-357	0XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	WOONSOCKET	RI
—	401-359	8XXX which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	PAWTUCKET	RI
—	401-364	2XXX4XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	CAROLINA	RI
—	401-365	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	PAWTUCKET	RI
—	401-366	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	PORTSMOUTH	RI
—	401-367	3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	NEWPORT	RI
—	401-368	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PROVIDENCE	RI
—	401-370	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	PROVIDENCE	RI
—	401-371	0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - RI	4016	PASCOAG	RI
—	401-372	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7351	NO KINGSTN	RI
—	401-374	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
—	401-375	1XXX5XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	TIVERTON	RI
—	401-377	0XXX1XXX3XXX6XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	WESTERLY	RI
—	401-378	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
—	401-379	1XXX5XXX6XXX7XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - RI	4016	NO KINGSTN	RI
—	401-380	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	NEWPORT	RI
—	401-381	3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	W WARWICK	RI
—	401-383	8XXX which blocks →	COMCAST IP PHONE, LLC	318J	PROVIDENCE	RI
—	401-384	0XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	WARWICK	RI
—	401-385	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	COVENTRY	RI
—	401-386	not yet reported which blocks →	ONVOY, LLC - RI	977E	NO KINGSTN	RI
—	401-387	0XXX1XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	HOPEVALLEY	RI
—	401-388	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7351	WESTERLY	RI
—	401-392	none assigned yet which blocks →	VERIZON NEW ENGLAND INC.	9102	COVENTRY	RI
—	401-393	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	PROVIDENCE	RI
—	401-396	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	BRISTOL	RI
—	401-397	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	COVENTRY	RI
—	401-398	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	GREENWICH	RI
—	401-399	1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - RI	977E	NEWPORT	RI
—	401-401	not yet reported which blocks →				RI
—	401-404	3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	CENTREDALE	RI
—	401-405	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	CUMBLND HL	RI
—	401-407	0XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	COVENTRY	RI
—	401-410	3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	BRISTOL	RI
—	401-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	RI
—	401-417	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - RI	977E	NEWPORT	RI
—	401-419	none assigned yet which blocks →	METROPCS, INC.	5562	PROVIDENCE	RI
—	401-420	2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	LTLCOMPTON	RI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.