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 839
FRACTEL, LLC 18
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
2021-03-16 839-766 1XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H GREATFALLS SC
2020-08-05 839-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ROCK HILL SC
2020-07-28 839-400 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H FORT MILL SC
2020-06-10 839-356 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ORANGEBURG SC
2020-03-27 839-200 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WHITMIRE SC
2020-03-27 839-222 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BATH SC
2020-03-27 839-300 0XXX1XXX3XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H SHAWAFBHTS SC
2020-03-27 839-333 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SUMTER SC
2020-03-27 839-444 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H EHRHARDT SC
2020-03-27 839-465 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H AIKEN SC
2020-03-27 839-529 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BAMBERG SC
2020-03-27 839-600 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H HOLLY HILL SC
2020-03-27 839-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ESTILL SC
2020-03-27 839-777 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H EDGEFIELD SC
2020-03-27 839-800 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NEWELLENTN SC
2020-03-27 839-888 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DENMARK SC
2020-03-27 839-900 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H JOHNSTON SC
2020-03-27 839-999 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CHPNLTLMTN SC

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.