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 985
LEVEL 3 COMMUNICATIONS, LLC - LA 24
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
2024-06-18 985-368 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 COVINGTON LA
2022-05-04 985-356 0XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 GOLDEN MDW LA
2011-02-16 985-200 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 MADISONVL LA
2004-10-20 985-464 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 GIBSON LA
2004-10-20 985-465 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 DULAC LA
2004-10-20 985-466 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 MONTEGUT LA
2004-10-20 985-467 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 PONCHATOUL LA
2004-10-20 985-664 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 RACELAND LA
2004-06-23 985-236 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 PIERREPART LA
2002-08-19 985-247 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 AMITE CITY LA
2002-07-24 985-221 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 MORGANCITY LA
2002-07-24 985-224 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAPLACE LA
2002-04-10 985-227 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 THIBODAUX LA
2002-04-10 985-235 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NORCO LA
2002-04-10 985-240 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LULING LA
2002-04-10 985-241 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BOGALUSA LA
2002-04-10 985-242 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 9 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LOCKPORT LA
2002-03-06 985-231 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 MANDEVILLE LA
2001-02-23 985-520 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 HAMMOND LA
2001-02-23 985-590 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 COVINGTON LA
2001-01-25 985-718 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 SLIDELL LA
— 985-746 1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 HOUMA LA
— 985-777 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BUSH LA
— 985-918 0XXX2XXX4XXX6XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 MORGANCITY LA

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.