NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 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
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
— 732-610 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREEHOLD NJ
— 732-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
— 732-613 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 SOUTHRIVER NJ
— 732-614 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREEHOLD NJ
— 732-615 5XXX7XXX8XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 MIDDLETOWN NJ
— 732-616 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FREEHOLD NJ
— 732-617 3XXX6XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 ENGLISHTN NJ
— 732-618 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREEHOLD NJ
— 732-619 2XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 NEWBRNSWCK NJ
— 732-620 9XXX which blocks → METROPCS, INC. 5562 FREEHOLD NJ
— 732-621 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 WOODBRIDGE NJ
— 732-622 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BOUNDBROOK NJ
— 732-623 3XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 METUCHEN NJ
— 732-625 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 FREEHOLD NJ
— 732-627 1XXX2XXX3XXX4XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 BOUNDBROOK NJ
— 732-628 6XXX which blocks → VERIZON NEW JERSEY, INC. 9206 NEWBRNSWCK NJ
— 732-629 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DUNELLEN NJ
— 732-630 0–9 XXXall 10 · 2 holders which blocks → BLOCK LINE SYSTEMS, LLC - NJ 835E DUNELLEN NJ
— 732-631 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JAMESBURG NJ
— 732-632 7XXX which blocks → VERIZON NEW JERSEY, INC. 9206 METUCHEN NJ
— 732-634 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 WOODBRIDGE NJ
— 732-635 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 METUCHEN NJ
— 732-636 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 WOODBRIDGE NJ
— 732-637 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → MONMOUTH TELEPHONE AND TELEGRAPH, INC. - NJ 3639 FREEHOLD NJ
— 732-638 1XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J PERTHAMBOY NJ
— 732-639 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 MIDDLETOWN NJ
— 732-640 0–9 XXXall 10 · 5 holders which blocks → VERIZON NEW JERSEY, INC. 9206 NEWBRNSWCK NJ
— 732-641 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 JAMESBURG NJ
— 732-643 5XXX6XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 ASBURYPARK NJ
— 732-644 none assigned yet which blocks → METROPCS, INC. 5562 TOMS RIVER NJ
— 732-645 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - NJ 637C NEWBRNSWCK NJ
— 732-646 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PERTHAMBOY NJ
— 732-647 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MONMTH JCT NJ
— 732-648 0XXX2XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 EMILLSTONE NJ
— 732-649 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 EMILLSTONE NJ
— 732-650 3XXX8XXX · 2 holders which blocks → VERIZON NEW JERSEY, INC. 9206 METUCHEN NJ
— 732-651 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 SOUTHRIVER NJ
— 732-652 8XXX9XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 BOUNDBROOK NJ
— 732-655 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MONMOUTH TELEPHONE AND TELEGRAPH, INC. - NJ 3639 SPRINGLAKE NJ
— 732-656 5XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 JAMESBURG NJ
— 732-657 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 LAKEHURST NJ
— 732-658 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 FRANKLINPK NJ
— 732-659 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW JERSEY, INC. 9206 NEWBRNSWCK NJ
— 732-660 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW JERSEY, INC. 9206 DEAL NJ
— 732-661 5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 PERTHAMBOY NJ
— 732-662 0XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 METUCHEN NJ
— 732-663 6XXX7XXX9XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 DEAL NJ
— 732-665 6XXX which blocks → COOPERATIVE COMMUNICATIONS, INC. 8407 FREEHOLD NJ
— 732-667 0XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 BOUNDBROOK NJ
— 732-668 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWBRNSWCK 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.