NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 509
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 3
NEW CINGULAR WIRELESS PCS, LLC 2
EXIANT COMMUNICATIONS LLC 2
LEVEL 3 COMMUNICATIONS, LLC - WA 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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-06-01 509-285-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E OAKESDALE WA
2021-06-01 509-287-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E FARMINGTON WA
2021-06-01 509-320-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E STARBUCK WA
2021-06-01 509-341-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E TWISP WA
2021-06-01 509-347-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E RITZVILLE WA
2021-06-01 509-383-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E GRANGER WA
2021-06-01 509-390-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SOAP LAKE WA
2021-06-01 509-401-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E POMEROY WA
2021-06-01 509-402-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E GRANDVIEW WA
2021-06-01 509-402-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E GRANDVIEW WA
2021-06-01 509-407-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E QUINCY WA
2021-06-01 509-407-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E QUINCY WA
2021-06-01 509-408-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E LIBERTY LK WA
2021-06-01 509-408-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E LIBERTY LK WA
2021-06-01 509-410-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E PASCO WA
2021-06-01 509-410-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E PASCO WA
2021-06-01 509-410-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E PASCO WA
2021-06-01 509-410-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E PASCO WA
2021-06-01 509-417-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E WARDEN WA
2021-06-01 509-450-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E EPHRATA WA
2021-06-01 509-450-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E EPHRATA WA
2021-06-01 509-478-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E ROSALIA WA
2021-06-01 509-501-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E ODESSA WA
2021-06-01 509-510-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E OTHELLO WA
2021-06-01 509-510-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E OTHELLO WA
2021-06-01 509-516-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E WALLAWALLA WA
2021-06-01 509-516-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E WALLAWALLA WA
2021-06-01 509-516-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E WALLAWALLA WA
2021-06-01 509-516-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E WALLAWALLA WA
2021-06-01 509-584-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E WAPATO WA
2021-06-01 509-584-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E WAPATO WA
2021-06-01 509-589-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E NEWPORT WA
2021-06-01 509-589-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E NEWPORT WA
2021-06-01 509-605-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E WILBUR WA
2021-06-01 509-612-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E KETTLE FLS WA
2021-06-01 509-621-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E NEWMANLAKE WA
2021-06-01 509-621-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E NEWMANLAKE WA
2021-06-01 509-635-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E GARFIELD WA
2021-06-01 509-642-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E HARRAH WA
2021-06-01 509-644-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E LOON LAKE WA
2021-06-01 509-646-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E WASHTUCNA WA
2021-06-01 509-653-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E NACHES WA
2021-06-01 509-658-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E NILE WA
2021-06-01 509-672-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E RIMROCK WA
2021-06-01 509-673-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E TIETON WA
2021-06-01 509-677-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E LIND WA
2021-06-01 509-740-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E OMAK WA
2021-06-01 509-749-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E EUREKA WA
2021-06-01 509-781-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E PROSSER WA
2021-06-01 509-785-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E GEORGE WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.