NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 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, all time — NPA 223
ONVOY, LLC - PA 77
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
2026-04-14 223-392 0XXX which blocks → ONVOY, LLC - PA 547E HUMMELSTN PA
2026-04-13 223-391 0XXX1XXX · 2 holders which blocks → ONVOY, LLC - PA 547E EPHRATA PA
2026-01-27 223-389 0XXX1XXX8XXX · 2 holders which blocks → ONVOY, LLC - PA 547E CARLISLE PA
2026-01-13 223-387 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E LANCASTER PA
2024-09-10 223-368 0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E LEWISTOWN PA
2024-08-21 223-365 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E LANCASTER PA
2024-06-08 223-364 0XXX1XXX2XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E ELIZABTHTN PA
2024-04-18 223-360 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E JONESTOWN PA
2024-02-01 223-358 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E CHAMBERSBG PA
2024-01-05 223-354 0XXX1XXX which blocks → ONVOY, LLC - PA 547E DILLSBURG PA
2024-01-05 223-357 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E YORK PA
2023-12-20 223-351 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E MECHANCSBG PA
2023-12-20 223-352 0XXX7XXX · 2 holders which blocks → ONVOY, LLC - PA 547E ANNVILLE PA
2023-12-20 223-353 0XXX1XXX2XXX5XXX · 4 holders which blocks → ONVOY, LLC - PA 547E SHELLSVL PA
2023-09-12 223-324 0XXX2XXX which blocks → ONVOY, LLC - PA 547E MERCERSBG PA
2023-09-12 223-326 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC - PA 547E WAYNESBORO PA
2023-09-12 223-327 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E HARISBGZN2 PA
2023-09-12 223-328 0XXX2XXX which blocks → ONVOY, LLC - PA 547E THOMPSONTN PA
2023-09-12 223-329 0XXX1XXX2XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E FRYSTOWN PA
2023-09-12 223-330 0XXX1XXX2XXX3XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E NEWHOLLAND PA
2023-09-12 223-331 1XXX2XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E ADAMSTOWN PA
2023-09-12 223-335 0XXX1XXX2XXX5XXX · 2 holders which blocks → ONVOY, LLC - PA 547E MANHEIM PA
2023-09-12 223-337 0XXX2XXX7XXX · 2 holders which blocks → ONVOY, LLC - PA 547E NEEDMORE PA
2023-08-16 223-320 0XXX1XXX3XXX8XXX · 3 holders which blocks → ONVOY, LLC - PA 547E GRATZ PA
2023-08-16 223-325 0XXX1XXX3XXX8XXX · 2 holders which blocks → ONVOY, LLC - PA 547E LEWISBERRY PA
2023-06-15 223-319 0XXX2XXX which blocks → ONVOY, LLC - PA 547E MARIETTA PA
2023-06-15 223-321 2XXX which blocks → ONVOY, LLC - PA 547E DUNCANNON PA
2023-06-13 223-314 0XXX1XXX2XXX9XXX which blocks → ONVOY, LLC - PA 547E LITTLESTN PA
2023-06-13 223-318 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - PA 547E YORK SPG PA
2023-06-08 223-313 2XXX3XXX7XXX · 3 holders which blocks → ONVOY, LLC - PA 547E AIRVILLE PA
2023-06-08 223-315 0XXX1XXX2XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E DENVER PA
2022-10-25 223-338 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E LEOLA PA
2022-10-25 223-432 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E FAYETTEVL PA
2022-10-24 223-823 0XXX1XXX6XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E LITITZ PA
2022-10-18 223-723 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E LOGANVILLE PA
2022-09-02 223-292 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E JONESTOWN PA
2022-09-02 223-294 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E MIDDLETOWN PA
2022-09-02 223-295 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E MOUNT JOY PA
2022-09-02 223-296 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - PA 547E MTHOLLYSPG PA
2021-07-29 223-623 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E QUARRYVL PA
2021-07-26 223-523 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E SHIPPENSBG PA
2021-07-22 223-265 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E AKRON PA
2021-07-20 223-264 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E EPHRATA PA
2021-07-01 223-334 0XXX1XXX3XXX4XXX6XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E MILLERSBG PA
2021-05-26 223-283 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E ELIZABTHTN PA
2021-05-26 223-303 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E HANOVER PA
2021-05-26 223-423 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E ICKESBURG PA
2021-04-14 223-273 0XXX2XXX3XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - PA 547E ALLENSVL PA
2021-04-14 223-277 0XXX2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → ONVOY, LLC - PA 547E BELLEVILLE PA
2021-04-14 223-288 0XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E BLAIN PA

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.