Recent thousands-block assignments

10 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 406

T-MOBILE USA, INC. 7

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 2

NEW CINGULAR WIRELESS PCS, LLC 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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2012-11-19	406-313-6XXX	6000–6999	Assigned	ONVOY, LLC - MT	453F	BOULDER	MT
2012-11-19	406-720-5XXX	5000–5999	Assigned	ONVOY, LLC - MT	453F	COLSTRIP	MT
2012-11-19	406-720-6XXX	6000–6999	Assigned	ONVOY, LLC - MT	453F	COLSTRIP	MT
2012-11-19	406-720-7XXX	7000–7999	Assigned	ONVOY, LLC - MT	453F	COLSTRIP	MT
2012-11-19	406-720-8XXX	8000–8999	Assigned	ONVOY, LLC - MT	453F	COLSTRIP	MT
2012-11-19	406-744-2XXX	2000–2999	Assigned	WESTERN MONTANA COMMUNITYTEL INC. - MT	986F	STIGNATIUS	MT
2012-11-19	406-813-5XXX	5000–5999	Assigned	ONVOY, LLC - MT	453F	BELGRADE	MT
2012-11-19	406-813-6XXX	6000–6999	Assigned	ONVOY, LLC - MT	453F	BELGRADE	MT
2012-11-19	406-813-7XXX	7000–7999	Assigned	ONVOY, LLC - MT	453F	BELGRADE	MT
2012-11-19	406-948-5XXX	5000–5999	Assigned	ONVOY, LLC - MT	453F	GLENDIVE	MT
2012-11-19	406-948-7XXX	7000–7999	Assigned	ONVOY, LLC - MT	453F	GLENDIVE	MT
2012-11-19	406-948-9XXX	9000–9999	Assigned	ONVOY, LLC - MT	453F	GLENDIVE	MT
2012-11-16	406-215-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	MISSOULA	MT
2012-11-16	406-215-2XXX	2000–2999	Assigned	ONVOY, LLC - MT	453F	MISSOULA	MT
2012-11-16	406-215-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	MISSOULA	MT
2012-11-16	406-215-4XXX	4000–4999	Assigned	ONVOY, LLC - MT	453F	MISSOULA	MT
2012-11-16	406-350-4XXX	4000–4999	Assigned	ONVOY, LLC - MT	453F	LEWISTOWN	MT
2012-11-16	406-350-5XXX	5000–5999	Assigned	ONVOY, LLC - MT	453F	LEWISTOWN	MT
2012-11-16	406-350-6XXX	6000–6999	Assigned	ONVOY, LLC - MT	453F	LEWISTOWN	MT
2012-11-16	406-350-7XXX	7000–7999	Assigned	ONVOY, LLC - MT	453F	LEWISTOWN	MT
2012-11-16	406-612-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	SWAN LAKE	MT
2012-11-16	406-612-2XXX	2000–2999	Assigned	ONVOY, LLC - MT	453F	SWAN LAKE	MT
2012-11-16	406-612-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	SWAN LAKE	MT
2012-11-16	406-692-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	YELLOW BAY	MT
2012-11-16	406-692-2XXX	2000–2999	Assigned	ONVOY, LLC - MT	453F	YELLOW BAY	MT
2012-11-16	406-692-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	YELLOW BAY	MT
2012-11-16	406-730-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	WHITEFISH	MT
2012-11-16	406-730-4XXX	4000–4999	Assigned	ONVOY, LLC - MT	453F	WHITEFISH	MT
2012-11-16	406-730-6XXX	6000–6999	Assigned	ONVOY, LLC - MT	453F	WHITEFISH	MT
2012-11-16	406-872-0XXX	0000–0999	Assigned	ONVOY, LLC - MT	453F	POLSON	MT
2012-11-16	406-872-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	POLSON	MT
2012-11-16	406-872-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	POLSON	MT
2012-11-16	406-872-4XXX	4000–4999	Assigned	ONVOY, LLC - MT	453F	POLSON	MT
2012-11-16	406-929-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	HUNGRYHORS	MT
2012-11-16	406-929-2XXX	2000–2999	Assigned	ONVOY, LLC - MT	453F	HUNGRYHORS	MT
2012-11-16	406-929-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	HUNGRYHORS	MT
2012-11-15	406-393-0XXX	0000–0999	Assigned	ONVOY, LLC - MT	453F	SOMERS	MT
2012-11-15	406-393-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	SOMERS	MT
2012-11-15	406-393-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	SOMERS	MT
2012-11-15	406-709-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	LAKESIDE	MT
2012-11-15	406-709-4XXX	4000–4999	Assigned	ONVOY, LLC - MT	453F	LAKESIDE	MT
2012-11-15	406-709-5XXX	5000–5999	Assigned	ONVOY, LLC - MT	453F	LAKESIDE	MT
2012-11-15	406-820-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	OLNEY	MT
2012-11-15	406-820-2XXX	2000–2999	Assigned	ONVOY, LLC - MT	453F	OLNEY	MT
2012-11-15	406-820-3XXX	3000–3999	Assigned	ONVOY, LLC - MT	453F	OLNEY	MT
2012-11-15	406-991-0XXX	0000–0999	Assigned	ONVOY, LLC - MT	453F	MARION	MT
2012-11-15	406-991-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	MARION	MT
2012-11-15	406-991-2XXX	2000–2999	Assigned	ONVOY, LLC - MT	453F	MARION	MT
2012-11-13	406-204-1XXX	1000–1999	Assigned	ONVOY, LLC - MT	453F	HELENA	MT
2012-11-13	406-204-2XXX	2000–2999	Assigned	ONVOY, LLC - MT	453F	HELENA	MT

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.