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
2010-01-25 616-606-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SPARTA MI
2010-01-25 616-676-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ADA MI
2010-01-25 616-730-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BYRON CTR MI
2010-01-25 616-755-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E IONIA MI
2010-01-25 616-951-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ROCKFORD MI
2010-01-25 616-953-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ZEELAND MI
2010-01-25 616-987-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LOWELL MI
2010-01-08 616-258-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2010-01-08 616-258-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-12-03 616-255-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GREENVILLE MI
2009-11-27 616-238-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-11-27 616-238-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-11-27 616-238-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-11-27 616-238-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-11-12 616-730-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J BYRON CTR MI
2009-11-09 616-264-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2009-11-09 616-264-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2009-11-06 616-577-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SARANAC MI
2009-10-30 616-232-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENVILLE MI
2009-10-30 616-232-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENVILLE MI
2009-10-26 616-258-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J GRAND RPDS MI
2009-10-21 616-205-7XXX 7000–7999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L SPARTA MI
2009-10-21 616-607-5XXX 5000–5999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L GRANDHAVEN MI
2009-10-21 616-953-7XXX 7000–7999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L ZEELAND MI
2009-10-13 616-795-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLAND MI
2009-09-25 616-264-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2009-09-25 616-264-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2009-09-25 616-848-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2009-09-16 616-258-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2009-09-16 616-258-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2009-09-14 616-238-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-09-14 616-238-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-09-14 616-238-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-09-14 616-238-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-09-14 616-238-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-09-10 616-258-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2009-09-04 616-647-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2009-09-04 616-820-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2009-09-04 616-820-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2009-09-03 616-214-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2009-09-03 616-214-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2009-08-28 616-761-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ORLEANS MI
2009-08-27 616-263-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR SPG MI
2009-08-27 616-378-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JAMESTOWN MI
2009-08-27 616-379-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUDSONVL MI
2009-08-27 616-528-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CALEDONIA MI
2009-08-27 616-541-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUTTON MI
2009-08-27 616-577-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SARANAC MI
2009-08-27 616-583-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BYRON CTR MI
2009-08-27 616-676-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA 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.