NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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, all time — NPA 318
ONVOY, LLC - LA 55
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
2025-12-22 318-318 0XXX2XXX3XXX4XXX7XXX8XXX9XXX which blocks → ONVOY, LLC - LA 749E MONTGOMERY LA
2025-03-14 318-853 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E MONROE LA
2025-03-14 318-856 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E RUSTON LA
2024-06-21 318-904 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E MONROE LA
2024-06-05 318-835 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E MINDEN LA
2024-03-22 318-897 0XXX1XXX which blocks → ONVOY, LLC - LA 749E OAK GROVE LA
2024-02-06 318-736 0XXX1XXX8XXX · 2 holders which blocks → ONVOY, LLC - LA 749E KEITHVILLE LA
2022-11-22 318-913 0XXX1XXX2XXX4XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E MANGHAM LA
2022-09-01 318-836 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E JENA LA
2021-07-14 318-783 0XXX3XXX · 2 holders which blocks → ONVOY, LLC - LA 749E BORDELONVL LA
2021-07-14 318-784 0XXX which blocks → ONVOY, LLC - LA 749E BIG CANE LA
2021-07-14 318-850 0XXX1XXX2XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E PLAUCHEVL LA
2021-01-29 318-781 2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLC - LA 749E ARCADIA LA
2021-01-29 318-810 0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - LA 749E COLFAX LA
2020-11-20 318-750 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E MONROE LA
2019-10-21 318-705 1XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - LA 749E PL DEALING LA
2019-10-21 318-710 0XXX2XXX3XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - LA 749E SAREPTA LA
2019-10-21 318-713 2XXX3XXX4XXX which blocks → ONVOY, LLC - LA 749E SHONGALOO LA
2019-03-06 318-333 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E MANGHAM LA
2018-10-11 318-720 0XXX1XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E BENTON LA
2018-02-21 318-252 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E HOMER LA
2017-03-28 318-888 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E SHREVEPORT LA
2016-07-08 318-585 1XXX which blocks → ONVOY, LLC - LA 749E SHREVEPORT LA
2016-05-18 318-569 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E MOORINGSPT LA
2016-05-18 318-591 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E OIL CITY LA
2016-05-18 318-706 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E HAUGHTON LA
2016-05-18 318-708 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E MINDEN LA
2016-05-18 318-818 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E NEWELLTON LA
2016-05-17 318-643 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E HARRISONBG LA
2016-05-13 318-577 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E CALHOUN LA
2016-03-23 318-668 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E OAKDALE LA
2016-03-09 318-667 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E STERLINGTN LA
2016-03-09 318-712 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E LECOMPTE LA
2016-03-09 318-714 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E OAK GROVE LA
2016-03-09 318-718 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E BENTON LA
2016-03-09 318-770 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E KEATCHIE LA
2016-03-09 318-772 0XXX1XXX2XXX3XXX7XXX8XXX which blocks → ONVOY, LLC - LA 749E DOYLINE LA
2016-03-08 318-409 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E MARKSVILLE LA
2015-11-25 318-666 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E SHREVEPORT LA
2015-11-23 318-383 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E SHREVEPORT LA
2015-08-14 318-900 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E SHREVEPORT LA
2015-01-28 318-800 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E SHREVEPORT LA
2014-08-12 318-620 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E FARMERVL LA
2008-09-23 318-754 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E SHREVEPORT LA
2008-06-12 318-734 0XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E SHREVEPORT LA
— 318-299 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - LA 749E MINDEN LA
— 318-304 1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E CALCASIEU LA
— 318-310 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E POLLOCK LA
— 318-373 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E MONTGOMERY LA
— 318-494 0XXX1XXX2XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - LA 749E CONVERSE 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.