NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 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
8X8, INC. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 732-305 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 FRANKLINPK NJ
— 732-306 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WOODBRIDGE NJ
— 732-307 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 SOUTHRIVER NJ
— 732-308 5XXX8XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 FREEHOLD NJ
— 732-309 none assigned yet which blocks → METROPCS, INC. 5562 NEWBRNSWCK NJ
— 732-310 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DUNELLEN NJ
— 732-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
— 732-312 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 BELMAR NJ
— 732-313 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 SOUTHAMBOY NJ
— 732-315 not yet reported which blocks → SPOK, INC. 6630 TOMS RIVER NJ
— 732-316 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 SOUTHAMBOY NJ
— 732-317 0XXX1XXX2XXX3XXX4XXX8XXX · 2 holders which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 NEWBRNSWCK NJ
— 732-319 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DUNELLEN NJ
— 732-321 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 METUCHEN NJ
— 732-322 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 NEWBRNSWCK NJ
— 732-323 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 LAKEHURST NJ
— 732-324 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 PERTHAMBOY NJ
— 732-326 2XXX which blocks → VERIZON NEW JERSEY, INC. 9206 WOODBRIDGE NJ
— 732-328 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 EMILLSTONE NJ
— 732-329 7XXX which blocks → VERIZON NEW JERSEY, INC. 9206 MONMTH JCT NJ
— 732-330 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOMS RIVER NJ
— 732-331 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 METUCHEN NJ
— 732-332 8XXX which blocks → VERIZON NEW JERSEY, INC. 9206 HOLMDEL NJ
— 732-334 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ENGLISHTN NJ
— 732-335 6XXX7XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 KEYPORT NJ
— 732-336 0XXX1XXX9XXX which blocks → VERIZON NEW JERSEY, INC. 9206 NEWBRNSWCK NJ
— 732-337 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 EATONTOWN NJ
— 732-338 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JAMESBURG NJ
— 732-339 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → VERIZON NEW JERSEY, INC. 9206 NEWBRNSWCK NJ
— 732-340 6XXX7XXX8XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 RAHWAY NJ
— 732-341 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 TOMS RIVER NJ
— 732-342 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 NEWBRNSWCK NJ
— 732-344 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 KEYPORT NJ
— 732-345 4XXX which blocks → VERIZON NEW JERSEY, INC. 9206 RED BANK NJ
— 732-346 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 METUCHEN NJ
— 732-347 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 PERTHAMBOY NJ
— 732-348 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 FRANKLINPK NJ
— 732-349 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 TOMS RIVER NJ
— 732-350 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 LAKEHURST NJ
— 732-351 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MATAWAN NJ
— 732-352 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 CARTERET NJ
— 732-353 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 SOUTHRIVER NJ
— 732-355 3XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 MONMTH JCT NJ
— 732-356 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 BOUNDBROOK NJ
— 732-357 5XXX6XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOUNDBROOK NJ
— 732-358 0XXX2XXX3XXX4XXX6XXX7XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 FREEHOLD NJ
— 732-359 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SPRINGLAKE NJ
— 732-360 5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW JERSEY, INC. 9206 SOUTHRIVER NJ
— 732-361 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ASBURYPARK NJ
— 732-362 1XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WOODBRIDGE 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.