NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 616
NEW CINGULAR WIRELESS PCS, LLC - IL 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 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
2016-03-23 616-930-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2016-03-15 616-253-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C MOLINE MI
2016-03-15 616-253-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C MOLINE MI
2016-03-15 616-449-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C FREEPORT MI
2016-03-15 616-449-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C FREEPORT MI
2016-03-14 616-383-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C SPARTA MI
2016-03-14 616-383-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C SPARTA MI
2016-03-14 616-888-3XXX 3000–3999Assigned 123.NET, LLC 2550 GRAND RPDS MI
2016-03-09 616-678-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E KENT CITY MI
2016-03-08 616-737-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C SARANAC MI
2016-03-08 616-737-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C SARANAC MI
2016-03-08 616-779-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C GRATTAN MI
2016-03-08 616-779-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C GRATTAN MI
2016-03-07 616-580-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C DORR MI
2016-03-07 616-580-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C DORR MI
2016-03-02 616-207-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C LOWELL MI
2016-03-02 616-207-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C LOWELL MI
2016-03-02 616-208-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C BELDING MI
2016-03-02 616-208-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C BELDING MI
2016-03-01 616-201-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C GRANDHAVEN MI
2016-03-01 616-201-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C GRANDHAVEN MI
2016-03-01 616-636-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C SAND LAKE MI
2016-03-01 616-636-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C SAND LAKE MI
2016-03-01 616-747-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C ROCKFORD MI
2016-03-01 616-747-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C ROCKFORD MI
2016-02-29 616-266-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C TRUFANT MI
2016-02-29 616-266-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C TRUFANT MI
2016-02-29 616-404-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C CASNOVIA MI
2016-02-29 616-404-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C CASNOVIA MI
2016-02-29 616-441-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C LAKEODESSA MI
2016-02-29 616-441-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C LAKEODESSA MI
2016-02-29 616-677-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C MARNE MI
2016-02-29 616-739-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C CLARKSVL MI
2016-02-29 616-739-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C CLARKSVL MI
2016-02-29 616-947-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C MARNE MI
2016-02-26 616-345-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C BYRON CTR MI
2016-02-26 616-345-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C BYRON CTR MI
2016-02-26 616-522-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C IONIA MI
2016-02-26 616-523-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C IONIA MI
2016-02-26 616-896-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C JAMESTOWN MI
2016-02-26 616-896-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C JAMESTOWN MI
2016-02-26 616-952-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C KENT CITY MI
2016-02-26 616-952-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C KENT CITY MI
2016-02-24 616-213-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C CEDAR SPG MI
2016-02-24 616-213-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C CEDAR SPG MI
2016-02-24 616-219-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C DUTTON MI
2016-02-24 616-219-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C DUTTON MI
2016-02-24 616-229-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C HUDSONVL MI
2016-02-24 616-229-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C HUDSONVL MI
2016-02-24 616-239-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C ZEELAND MI

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.