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 447
FRACTEL, LLC 30
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
2021-10-26 447-766 0–9 XXXall 10 · 9 holders which blocks → FRACTEL, LLC 965H CATLIN IL
2021-02-16 447-247 0XXX1XXX3XXX4XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H LODA IL
2021-02-16 447-336 0XXX1XXX3XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H MT PULASKI IL
2021-02-16 447-348 0XXX1XXX2XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H NEW BERLIN IL
2021-02-16 447-432 0XXX1XXX2XXX4XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H LUDLOW IL
2021-02-16 447-667 0XXX1XXX2XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H OGDEN IL
2021-02-16 447-758 6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ILLIOPOLIS IL
2021-02-16 447-786 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → FRACTEL, LLC 965H HARRISTOWN IL
2021-02-16 447-842 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DIVERNON IL
2021-02-16 447-946 0XXX1XXX3XXX4XXX6XXX · 4 holders which blocks → FRACTEL, LLC 965H MODESTO IL
2021-02-11 447-234 0XXX4XXX5XXX · 3 holders which blocks → FRACTEL, LLC 965H GIFFORD IL
2021-02-11 447-345 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CANTRALL IL
2021-02-11 447-477 0XXX1XXX4XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H FISHER IL
2021-02-01 447-200 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H MELVIN IL
2021-02-01 447-222 0XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H ARMSTRONG IL
2021-02-01 447-300 0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H MANSFIELD IL
2021-02-01 447-333 0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 6 holders which blocks → FRACTEL, LLC 965H BISMARCK IL
2021-02-01 447-356 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H RIVERTON IL
2021-02-01 447-400 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SHERMAN IL
2021-02-01 447-444 0XXX1XXX2XXX3XXX4XXX7XXX · 6 holders which blocks → FRACTEL, LLC 965H BONDVILLE IL
2021-02-01 447-465 0XXX1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H HENNING IL
2021-02-01 447-500 0XXX1XXX2XXX5XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H HAMMOND IL
2021-02-01 447-529 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H DECATUR IL
2021-02-01 447-600 0XXX1XXX2XXX4XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H TOLONO IL
2021-02-01 447-666 0XXX1XXX2XXX4XXX6XXX7XXX · 5 holders which blocks → FRACTEL, LLC 965H BUCKLEY IL
2021-02-01 447-777 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DANVILLE IL
2021-02-01 447-800 0XXX1XXX2XXX4XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H RANKIN IL
2021-02-01 447-888 0XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H RANTOUL IL
2021-02-01 447-900 0XXX1XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H SIDNEY IL
2021-02-01 447-999 0XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H FLATVILLE IL

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.