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 734
PAETEC ITEL, LLC 42
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
2009-11-06 734-333 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J WHITMORELK MI
— 734-215 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MILAN MI
— 734-220 0XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PETERSBURG MI
— 734-230 2XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J MONROE MI
— 734-234 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J TEMPERANCE MI
— 734-236 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J ROCKWOOD MI
— 734-237 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LIVONIA MI
— 734-252 0–9 XXXall 10 · 8 holders which blocks → PAETEC ITEL, LLC 829J BELLEVILLE MI
— 734-349 1XXX2XXX3XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MONROE MI
— 734-382 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J GREGORY MI
— 734-385 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J CHELSEA MI
— 734-389 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ANN ARBOR MI
— 734-390 4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J YPSILANTI MI
— 734-402 7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LIVONIA MI
— 734-403 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J ROMULUS MI
— 734-404 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J PLYMOUTH MI
— 734-405 3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J WAYNE MI
— 734-407 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J WYANDOTTE MI
— 734-408 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J DEXTER MI
— 734-415 1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NEW BOSTON MI
— 734-440 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NEW BOSTON MI
— 734-441 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J ROCKWOOD MI
— 734-442 2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J ROMULUS MI
— 734-470 0–9 XXXall 10 · 8 holders which blocks → PAETEC ITEL, LLC 829J SALINE MI
— 734-489 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ANN ARBOR MI
— 734-559 3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J TRENTON MI
— 734-561 3XXX4XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J TRENTON MI
— 734-567 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WILLIS MI
— 734-639 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J MONROE MI
— 734-656 7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PLYMOUTH MI
— 734-659 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ERIE MI
— 734-689 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → PAETEC ITEL, LLC 829J WHITMORELK MI
— 734-713 7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WAYNE MI
— 734-714 6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J YPSILANTI MI
— 734-759 5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WYANDOTTE MI
— 734-793 7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LIVONIA MI
— 734-794 3XXX which blocks → PAETEC ITEL, LLC 829J ANN ARBOR MI
— 734-795 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J FLAT ROCK MI
— 734-796 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BELLEVILLE MI
— 734-799 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CARLETON MI
— 734-826 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J IDA MI
— 734-828 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J DUNDEE MI

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.