Recent prefix assignments

7 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 856

ONVOY, LLC - NJ 6

NEW CINGULAR WIRELESS PCS, LLC - DC 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
—	856-246	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	CAMDEN	NJ
—	856-247	0–9 XXXwhole prefix which blocks →	BLOCK LINE SYSTEMS, LLC - NJ	835E	BERLIN	NJ
—	856-248	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	LAUREL SPG	NJ
—	856-251	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	WOODBURY	NJ
—	856-253	not yet reported which blocks →	SPOK, INC.	6630	HADDONFLD	NJ
—	856-255	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	RIVERSIDE	NJ
—	856-256	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	PITMAN	NJ
—	856-258	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	LAUREL SPG	NJ
—	856-260	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	XXXXXXXXXX	NJ
—	856-261	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	HADDON HTS	NJ
—	856-262	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	WILLIAMSTN	NJ
—	856-265	0XXX2XXX · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	MILLVILLE	NJ
—	856-267	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NJ	4804	MARLTON	NJ
—	856-269	1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	PITMAN	NJ
—	856-270	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	PITMAN	NJ
—	856-273	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	MOORESTOWN	NJ
—	856-275	0XXX2XXX · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	SALEM	NJ
—	856-276	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	PENNSGROVE	NJ
—	856-278	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	HADDONFLD	NJ
—	856-283	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NJ	4804	CAMDEN	NJ
—	856-284	0XXX2XXX3XXX5XXX6XXX7XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	PAULSBORO	NJ
—	856-285	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	VINELAND	NJ
—	856-286	0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	PITMAN	NJ
—	856-289	not yet reported which blocks →	SPOK, INC.	6630	CAMDEN	NJ
—	856-290	2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	BLACKWOOD	NJ
—	856-292	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NJ	4804	WENONAH	NJ
—	856-293	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	MILLVILLE	NJ
—	856-294	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ	7134	SWEDESBORO	NJ
—	856-296	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	MOORESTOWN	NJ
—	856-299	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	PENNSGROVE	NJ
—	856-302	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	BLACKWOOD	NJ
—	856-303	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	RIVERTON	NJ
—	856-305	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	VINELAND	NJ
—	856-306	2XXX5XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	BERLIN	NJ
—	856-307	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	GLASSBORO	NJ
—	856-309	6XXX which blocks →	VERIZON NEW JERSEY, INC.	9206	LAUREL SPG	NJ
—	856-310	3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks →	VERIZON NEW JERSEY, INC.	9206	HADDON HTS	NJ
—	856-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	856-312	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW JERSEY, INC.	9206	BEAVER BRK	NJ
—	856-314	2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	RIVERTON	NJ
—	856-315	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NJ	4804	BEAVER BRK	NJ
—	856-316	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	MOORESTOWN	NJ
—	856-317	6XXX8XXX which blocks →	VERIZON NEW JERSEY, INC.	9206	MERCHANTVL	NJ
—	856-321	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	MERCHANTVL	NJ
—	856-322	0XXX1XXX2XXX6XXX8XXX9XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	BERLIN	NJ
—	856-323	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	HADDON HTS	NJ
—	856-325	0XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7310	HADDONFLD	NJ
—	856-327	not yet reported which blocks →	VERIZON NEW JERSEY, INC.	9206	MILLVILLE	NJ
—	856-330	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NJ	4804	MERCHANTVL	NJ
—	856-334	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	MARLTON	NJ

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.