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
VOICESTREAM GSM I, LLC 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
2023-12-10 985-361 0XXX1XXX8XXX9XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C RACELAND LA
2022-01-20 985-403 0–9 XXXall 10 · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C HAMMOND LA
2021-10-26 985-347 0–9 XXXall 10 · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C HOUMA LA
2021-06-21 985-342 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C LAROSE LA
2012-03-01 985-208 0–9 XXXall 10 · 5 holders which blocks → VOICESTREAM GSM I, LLC 150C HOUMA LA
2004-07-20 985-677 7XXX9XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C LAROSE LA
2001-11-30 985-201 0–9 XXXall 10 · 3 holders which blocks → VOICESTREAM GSM I, LLC 150C SLIDELL LA
2001-10-02 985-628 5XXX which blocks → VOICESTREAM GSM I, LLC 150C HOUMA LA
2001-10-02 985-710 5XXX7XXX8XXX which blocks → VOICESTREAM GSM I, LLC 150C SLIDELL LA
2001-10-02 985-956 3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C HAMMOND LA
2001-08-24 985-869 4XXX5XXX7XXX8XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C MANDEVILLE LA
2001-07-26 985-774 0XXX2XXX5XXX7XXX8XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C SLIDELL LA
2001-07-26 985-778 0XXX2XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C MANDEVILLE LA
2001-05-29 985-665 3XXX4XXX5XXX which blocks → VOICESTREAM GSM I, LLC 150C HOUMA LA
— 985-215 4XXX6XXX8XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C HAMMOND LA
— 985-265 0–9 XXXall 10 · 7 holders which blocks → VOICESTREAM GSM I, LLC 150C SLIDELL LA
— 985-297 0–9 XXXall 10 · 5 holders which blocks → VOICESTREAM GSM I, LLC 150C RACELAND LA
— 985-397 8XXX9XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C MORGANCITY LA
— 985-510 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C HAMMOND LA
— 985-637 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C HOUMA LA
— 985-647 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C HOUMA LA
— 985-686 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VOICESTREAM GSM I, LLC 150C RACELAND LA
— 985-960 4XXX5XXX8XXX9XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C SLIDELL LA
— 985-969 8XXX9XXX which blocks → VOICESTREAM GSM I, LLC 150C HAMMOND 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.