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 225
ONVOY, LLC - LA 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
2026-09-17 225-557 0XXX which blocks → ONVOY, LLC - LA 749E ALBANY LA
2026-09-09 225-550 0XXX which blocks → ONVOY, LLC - LA 749E DENHAM SPG LA
2024-06-21 225-534 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E DENHAM SPG LA
2024-06-07 225-420 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX which blocks → ONVOY, LLC - LA 749E ZACHARY LA
2024-02-29 225-524 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E CLINTON LA
2024-02-28 225-531 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E SPRINGFLD LA
2024-01-30 225-233 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E DENHAM SPG LA
2023-08-24 225-375 0XXX1XXX2XXX · 3 holders which blocks → ONVOY, LLC - LA 749E ROUGON LA
2023-08-24 225-516 0XXX1XXX2XXX · 3 holders which blocks → ONVOY, LLC - LA 749E CONVENT LA
2023-08-22 225-514 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E LIVINGSTON LA
2023-08-16 225-370 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E PLAQUEMINE LA
2023-01-20 225-521 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2021-02-24 225-327 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E LUTCHER LA
2021-02-24 225-451 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E ZACHARY LA
2021-02-24 225-455 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E PLAQUEMINE LA
2021-02-24 225-488 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E ST GABRIEL LA
2021-02-24 225-533 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E VACHERIE LA
2021-02-01 225-479 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E SPRINGFLD LA
2021-01-28 225-525 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E ROUGON LA
2019-03-04 225-825 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E NO CORNOR LA
2017-08-31 225-523 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E DENHAM SPG LA
2017-08-31 225-529 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2017-08-30 225-465 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2016-10-19 225-998 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E DENHAM SPG LA
2016-09-01 225-351 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E ROUGON LA
2016-09-01 225-513 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E JACKSON LA
2016-04-26 225-831 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2016-03-14 225-230 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E TUNICA LA
2016-02-17 225-725 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E DONALDSNVL LA
2015-11-17 225-475 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2015-11-17 225-502 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2015-08-17 225-666 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2015-08-14 225-900 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2015-01-28 225-800 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2008-01-31 225-364 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
— 225-500 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E ALBANY LA

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.