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 405
ONVOY, LLC - OK 56
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
2025-12-22 405-405 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F ALEX OK
2021-07-07 405-994 0XXX4XXX · 2 holders which blocks → ONVOY, LLC - OK 409F BYARS OK
2021-06-17 405-993 0XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → ONVOY, LLC - OK 409F CHOCTAW OK
2021-03-08 405-870 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OK 409F YUKON OK
2021-03-08 405-873 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F SHAWNEE OK
2020-12-31 405-874 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F NOBLE OK
2020-12-31 405-914 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F NORMAN OK
2018-09-28 405-766 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2017-06-15 405-724 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2016-06-23 405-451 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F WELLSTON OK
2016-06-22 405-925 0XXX1XXX2XXX3XXX4XXX9XXX · 2 holders which blocks → ONVOY, LLC - OK 409F SPENCER OK
2016-06-17 405-467 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F YUKON OK
2016-06-17 405-937 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OK 409F STILLWATER OK
2016-03-08 405-594 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2016-03-04 405-407 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OK 409F NOBLE OK
2016-03-03 405-877 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F GUTHRIE OK
2015-11-24 405-400 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2015-09-18 405-900 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2015-08-13 405-500 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2013-07-05 405-276 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OK 409F EL RENO OK
2013-07-05 405-369 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OK 409F MINCO OK
2013-07-05 405-578 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - OK 409F YUKON OK
2013-07-05 405-731 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F MIDWEST CY OK
2012-06-05 405-896 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2009-01-12 405-875 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
— 405-266 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OK 409F WANETTE OK
— 405-296 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F CROMWELL OK
— 405-299 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F CALVIN OK
— 405-335 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OK 409F WYNNEWOOD OK
— 405-336 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F WELEETKA OK
— 405-337 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - OK 409F WEWOKA OK
— 405-342 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OK 409F ARCADIA OK
— 405-345 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OK 409F EL RENO OK
— 405-346 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OK 409F GUTHRIE OK
— 405-347 1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OK 409F HARRAH OK
— 405-349 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OK 409F LUTHER OK
— 405-353 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OK 409F MUSTANG OK
— 405-355 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OK 409F NOBLE OK
— 405-357 6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OK 409F WHEATLAND OK
— 405-358 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F PIEDMONT OK
— 405-362 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OK 409F TUTTLE OK
— 405-389 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OK 409F WETUMKA OK
— 405-393 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F MAUD OK
— 405-507 9XXX which blocks → ONVOY, LLC - OK 409F BRITTON OK
— 405-516 1XXX8XXX9XXX which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
— 405-526 0XXX3XXX9XXX · 2 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
— 405-529 3XXX4XXX5XXX6XXX · 3 holders which blocks → ONVOY, LLC - OK 409F BRITTON OK
— 405-536 0XXX1XXX4XXX5XXX which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
— 405-705 0XXX1XXX3XXX4XXX6XXX8XXX which blocks → ONVOY, LLC - OK 409F EDMOND OK
— 405-709 0XXX3XXX4XXX6XXX7XXX which blocks → ONVOY, LLC - OK 409F BETHANY OK

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.