NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 973
BARR TELL USA, INC. 2
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 973-237 8XXX which blocks → VERIZON NEW JERSEY, INC. 9206 LITTLE FLS NJ
— 973-238 2XXX3XXX5XXX7XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 HAWTHORNE NJ
— 973-239 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 VERONA NJ
— 973-240 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T - LOCAL 7421 WHIPPANY NJ
— 973-241 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → AT&T - LOCAL 7421 BERNARDSVL NJ
— 973-242 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 NEWARK NJ
— 973-243 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 ORANGE NJ
— 973-244 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 CALDWELL NJ
— 973-245 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW JERSEY, INC. 9206 MADISON NJ
— 973-247 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 PATERSON NJ
— 973-248 2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW JERSEY, INC. 9206 POMPTONLKS NJ
— 973-249 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 PASSAIC NJ
— 973-251 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → AT&T - LOCAL 7421 LIVINGSTON NJ
— 973-252 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 SUCCASUNNA NJ
— 973-253 4XXX which blocks → VERIZON NEW JERSEY, INC. 9206 PASSAIC NJ
— 973-254 1XXX which blocks → VERIZON NEW JERSEY, INC. 9206 MORRISTOWN NJ
— 973-256 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 LITTLE FLS NJ
— 973-257 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 BOONTON NJ
— 973-258 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MILLBURN NJ
— 973-259 5XXX6XXX8XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 BLOOMFIELD NJ
— 973-260 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 XXXXXXXXXX NJ
— 973-261 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 MADISON NJ
— 973-263 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 BOONTON NJ
— 973-264 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → AT&T - LOCAL 7421 MADISON NJ
— 973-265 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T - LOCAL 7421 BOONTON NJ
— 973-266 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 ORANGE NJ
— 973-267 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MORRISTOWN NJ
— 973-268 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 NEWARK NJ
— 973-269 not yet reported which blocks → SPOK, INC. 6630 MORRISTOWN NJ
— 973-270 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 MORRISTOWN NJ
— 973-272 0–9 XXXall 10 · 6 holders which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 PASSAIC NJ
— 973-273 3XXX4XXX7XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 NEWARK NJ
— 973-274 5XXX8XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 NEWARK NJ
— 973-275 7XXX8XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 SO ORANGE NJ
— 973-276 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 CALDWELL NJ
— 973-278 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 PATERSON NJ
— 973-279 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 PATERSON NJ
— 973-281 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 BLOOMFIELD NJ
— 973-282 6XXX which blocks → VERIZON NEW JERSEY, INC. 9206 NEWARK NJ
— 973-283 5XXX which blocks → VERIZON NEW JERSEY, INC. 9206 BUTLER NJ
— 973-284 7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 NUTLEY NJ
— 973-285 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MORRISTOWN NJ
— 973-286 8XXX9XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 NEWARK NJ
— 973-287 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → AT&T - LOCAL 7421 CALDWELL NJ
— 973-288 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HOPATCONG NJ
— 973-290 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MORRISTOWN NJ
— 973-292 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MORRISTOWN NJ
— 973-293 4XXX5XXX6XXX · 3 holders which blocks → BRIGHTSPEED OF NEW JERSEY, INC. 0138 MONTAGUE NJ
— 973-294 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MORRISTOWN NJ
— 973-295 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MADISON NJ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.