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 337
PAETEC ITEL, LLC 34
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
2022-03-30 337-568 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LAFAYETTE LA
2013-05-31 337-221 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J DE RIDDER LA
2011-01-04 337-777 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J PORT BARRE LA
2005-10-27 337-464 none assigned yet which blocks → PAETEC ITEL, LLC 829J CARENCRO LA
2005-10-27 337-503 not yet reported which blocks → PAETEC ITEL, LLC 829J SULPHUR LA
2005-05-04 337-858 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J YOUNGSVL LA
2005-04-28 337-701 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J EUNICE LA
2005-04-28 337-702 1XXX2XXX3XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LAKEARTHUR LA
2005-04-26 337-333 0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J RAYNE LA
2005-04-26 337-803 0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J DUSON LA
2005-04-26 337-809 0XXX which blocks → PAETEC ITEL, LLC 829J FRANKLIN LA
2005-04-26 337-904 0XXX1XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LOREAUVL LA
2005-04-26 337-915 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J CARENCRO LA
2005-04-26 337-917 5XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ERATH LA
2003-09-17 337-385 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J ABBEVILLE LA
2002-10-07 337-323 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J OPELOUSAS LA
2002-10-07 337-327 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CROWLEY LA
2001-06-12 337-990 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LK CHARLES LA
2001-04-11 337-330 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J BROUSSARD LA
— 337-202 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J DE RIDDER LA
— 337-314 not yet reported which blocks → PAETEC ITEL, LLC 829J LAFAYETTE LA
— 337-405 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J LK CHARLES LA
— 337-408 1XXX3XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LAFAYETTE LA
— 337-418 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J OPELOUSAS LA
— 337-492 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NEW IBERIA LA
— 337-502 0XXX1XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LK CHARLES LA
— 337-517 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J ABBEVILLE LA
— 337-606 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J NEW IBERIA LA
— 337-608 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J NEW IBERIA LA
— 337-704 1XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LAFAYETTE LA
— 337-714 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BROUSSARD LA
— 337-717 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J CROWLEY LA
— 337-718 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LEESVILLE LA
— 337-772 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J ABBEVILLE 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.