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 360
ONVOY, LLC - WA 26
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
2021-10-22 360-803 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WA 483E RIDGEFIELD WA
2020-06-05 360-564 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - WA 483E POULSBO WA
2020-05-21 360-360 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WA 483E VANCOUVER WA
2019-04-15 360-845 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WA 483E PORT ORCH WA
2019-01-11 360-506 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WA 483E CENTRALIA WA
2019-01-11 360-641 0XXX1XXX2XXX4XXX5XXX7XXX · 3 holders which blocks → ONVOY, LLC - WA 483E ASHFORD WA
2019-01-11 360-997 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WA 483E BLACKDIMND WA
2016-07-20 360-559 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WA 483E CENTRALIA WA
2016-03-14 360-218 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WA 483E LONGVIEW WA
2015-09-16 360-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WA 483E SILVERDALE WA
2015-09-16 360-938 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - WA 483E WOODLAND WA
2013-04-30 360-972 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WA 483E OLYMPIA WA
2007-03-15 360-940 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - WA 483E COPALIS WA
— 360-226 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC - WA 483E ENUMCLAW WA
— 360-227 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - WA 483E BELFAIR WA
— 360-235 none assigned yet which blocks → ONVOY, LLC - WA 483E BUCODA WA
— 360-323 not yet reported which blocks → ONVOY, LLC - WA 483E OAK HARBOR WA
— 360-364 5XXX which blocks → ONVOY, LLC - WA 483E STEVESPASS WA
— 360-382 3XXX6XXX7XXX8XXX which blocks → ONVOY, LLC - WA 483E PTTOWNSEND WA
— 360-404 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - WA 483E MT VERNON WA
— 360-469 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - WA 483E BLACKDIMND WA
— 360-626 1XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → ONVOY, LLC - WA 483E POULSBO WA
— 360-646 2XXX3XXX8XXX which blocks → ONVOY, LLC - WA 483E MORTON WA
— 360-655 0XXX4XXX5XXX7XXX · 4 holders which blocks → ONVOY, LLC - WA 483E EATONVILLE WA
— 360-717 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - WA 483E HOODSPORT WA
— 360-822 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - WA 483E SNOHOMISH WA

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.