NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 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, last 30 days — NPA 959
ONVOY, LLC - CT 1
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
2026-09-15 959-994 0XXX which blocks → ONVOY, LLC - CT 639C PLAINVILLE CT
2026-07-24 959-997 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT
2026-03-12 959-284 0XXX1XXX which blocks → ONVOY, LLC - CT 639C MYSTIC CT
2026-02-04 959-281 1XXX2XXX3XXX which blocks → ONVOY, LLC - CT 639C NEW LONDON CT
2025-03-13 959-275 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - CT 639C FARMINGTON CT
2024-05-01 959-267 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - CT 639C BRISTOL CT
2024-03-28 959-264 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - CT 639C NEW LONDON CT
2024-01-25 959-259 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT
2023-09-06 959-256 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT
2023-07-26 959-253 0XXX2XXX4XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C PLAINFIELD CT
2023-07-26 959-254 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C NORWICH CT
2023-07-07 959-252 0XXX1XXX2XXX8XXX9XXX which blocks → ONVOY, LLC - CT 639C ROCKVILLE CT
2023-07-05 959-250 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C MANCHESTER CT
2023-06-09 959-203 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CT 639C FARMINGTON CT
2022-01-10 959-244 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CT 639C FARMINGTON CT
2021-10-05 959-228 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CT 639C CORNWALL CT
2021-07-13 959-235 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CT 639C BRISTOL CT
2021-07-13 959-243 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C ROCKVILLE CT
2021-07-02 959-227 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CT 639C CANAAN CT
2021-06-24 959-225 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CT 639C NEWBRITAIN CT
2021-06-24 959-232 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C WILLIMNTIC CT
2020-10-27 959-220 0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - CT 639C ESSEX CT
2020-10-27 959-566 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CT 639C LEBANON CT
2020-06-18 959-881 0XXX1XXX2XXX3XXX5XXX6XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C NIANTIC CT
2020-06-12 959-251 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - CT 639C CANTON CT
2020-06-12 959-271 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - CT 639C PAWCATUCK CT
2020-06-12 959-955 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - CT 639C KILLINGWTH CT
2020-06-12 959-991 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - CT 639C CLINTON CT
2020-05-28 959-224 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C LITCHFIELD CT
2020-05-28 959-301 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - CT 639C COVENTRY CT
2020-05-28 959-949 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CT 639C JEWETTCITY CT
2020-05-13 959-998 0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - CT 639C LYME CT
2019-10-01 959-233 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CT 639C ESSEX CT
2019-07-15 959-300 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - CT 639C KENT CT
2019-07-15 959-400 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C LAKEVILLE CT
2019-07-15 959-500 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C LEDYARD CT
2019-07-15 959-600 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C PLAINFIELD CT
2019-07-15 959-800 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C THOMASTON CT
2019-07-15 959-901 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C TORRINGTON CT
2019-02-12 959-245 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - CT 639C NEWBRITAIN CT
2017-10-03 959-666 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT
2017-05-10 959-265 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C ESSEX CT
2017-05-10 959-335 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C NORFOLK CT
2015-01-27 959-777 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT
2015-01-27 959-888 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT
2014-10-03 959-999 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT

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.