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
2004-08-17 616-379-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 HUDSONVL MI
2004-08-17 616-425-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 ADA MI
2004-08-17 616-499-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 HOLLAND MI
2004-08-17 616-504-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CLARKSVL MI
2004-08-17 616-524-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 GRATTAN MI
2004-08-17 616-536-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 CALEDONIA MI
2004-08-17 616-548-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 GREENVILLE MI
2004-08-17 616-604-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 GRANDHAVEN MI
2004-08-17 616-622-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 ALTO MI
2004-08-17 616-765-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 FREEPORT MI
2004-08-17 616-871-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 DUTTON MI
2004-08-17 616-899-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CONKLIN MI
2004-08-12 616-773-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 GRAND RPDS MI
2004-08-12 616-773-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 GRAND RPDS MI
2004-08-03 616-726-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C GRAND RPDS MI
2004-07-29 616-828-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2004-07-15 616-724-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2004-07-15 616-724-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2004-07-15 616-848-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2004-06-29 616-212-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2004-06-23 616-504-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CLARKSVL MI
2004-06-22 616-200-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 TRUFANT MI
2004-06-22 616-209-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 HUDSONVL MI
2004-06-22 616-374-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LAKEODESSA MI
2004-06-22 616-421-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LOWELL MI
2004-06-22 616-431-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MARNE MI
2004-06-22 616-522-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 IONIA MI
2004-06-22 616-524-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRATTAN MI
2004-06-22 616-548-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GREENVILLE MI
2004-06-22 616-678-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 KENT CITY MI
2004-06-22 616-765-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FREEPORT MI
2004-06-15 616-217-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BYRON CTR MI
2004-06-15 616-359-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DORR MI
2004-06-15 616-425-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ADA MI
2004-06-15 616-622-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ALTO MI
2004-06-15 616-675-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CASNOVIA MI
2004-06-15 616-871-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DUTTON MI
2004-06-02 616-254-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J GRAND RPDS MI
2004-05-26 616-217-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BYRON CTR MI
2004-04-27 616-217-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BYRON CTR MI
2004-04-27 616-217-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BYRON CTR MI
2004-04-14 616-209-1XXX 1000–1999Assigned ACE TELEPHONE COMPANY OF MICHIGAN, INC. 736B HUDSONVL MI
2004-03-16 616-301-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2004-02-26 616-819-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2004-02-26 616-819-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2004-02-26 616-819-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2004-02-26 616-819-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2004-02-26 616-819-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2004-02-26 616-819-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2004-02-26 616-819-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS 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.