NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 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 458
ONVOY, LLC - OR 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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2026-09-14 458-352 0XXX1XXX which blocks → ONVOY, LLC - OR 750E HERMISTON OR
2026-07-24 458-363 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OR 750E EUGENE OR
2026-07-22 458-341 0XXX which blocks → ONVOY, LLC - OR 750E CENTRAL PT OR
2026-07-22 458-342 0XXX which blocks → ONVOY, LLC - OR 750E CORVALLIS OR
2026-07-08 458-340 0XXX which blocks → ONVOY, LLC - OR 750E NEWPORT OR
2025-10-15 458-351 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E EUGENE OR
2025-04-16 458-346 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - OR 750E MEDFORD OR
2025-02-12 458-336 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OR 750E REDMOND OR
2024-10-10 458-332 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OR 750E GRANTSPASS OR
2024-04-26 458-324 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OR 750E GOLD BEACH OR
2024-03-21 458-321 0XXX1XXX which blocks → ONVOY, LLC - OR 750E PHOENIX OR
2024-03-15 458-320 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OR 750E EUGENE OR
2023-09-21 458-309 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E ALBANY OR
2023-09-21 458-310 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E ROSEBURG OR
2023-09-21 458-312 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E REDMOND OR
2023-09-21 458-313 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OR 750E WHITE CITY OR
2023-08-17 458-307 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E CORVALLIS OR
2023-06-26 458-306 0XXX1XXX2XXX3XXX8XXX · 5 holders which blocks → ONVOY, LLC - OR 750E PORTORFORD OR
2023-03-30 458-303 1XXX3XXX · 2 holders which blocks → ONVOY, LLC - OR 750E RUFUS OR
2022-12-01 458-451 4XXX5XXX8XXX · 2 holders which blocks → ONVOY, LLC - OR 750E BUTTEFALLS OR
2021-04-16 458-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E EUGENE OR
2021-02-05 458-446 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E ONTARIO OR
2020-04-06 458-258 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OR 750E ROGUERIVER OR
2020-01-27 458-251 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OR 750E ONTARIO OR
2019-10-24 458-241 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OR 750E ECHO OR
2019-10-24 458-242 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - OR 750E IMBLER OR
2019-10-24 458-243 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OR 750E GLENDALE OR
2019-10-24 458-244 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E MYRTLE CRK OR
2019-10-09 458-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E COOS BAY OR
2019-05-30 458-459 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OR 750E BLUE RIVER OR
2018-10-09 458-237 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - OR 750E ODELL OR
2018-09-11 458-854 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E THE DALLES OR
2017-09-07 458-777 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OR 750E JEFFERSON OR
2017-09-07 458-999 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - OR 750E UMATILLA OR
2016-07-13 458-757 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OR 750E MILTONFWTR OR
2016-07-06 458-213 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E WALLOWA OR
2016-03-18 458-227 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E CRATERLAKE OR
2016-03-17 458-204 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E TOLEDO OR
2016-03-14 458-675 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - OR 750E OAKRIDGE OR
2016-02-19 458-225 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OR 750E MEDFORD OR
2016-02-04 458-292 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E BEND OR
2015-04-14 458-888 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OR 750E STATELINE OR
2012-09-11 458-202 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OR 750E BEND OR
— 458-201 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OR 750E EUGENE OR
— 458-230 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E COOS BAY OR
— 458-703 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → ONVOY, LLC - OR 750E CANYONVL OR
— 458-802 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OR 750E ROSEBURG OR
— 458-803 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E ROSEBURG OR

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.