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
2010-06-15 616-325-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C GRAND RPDS MI
2010-06-15 616-325-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2010-06-14 616-795-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2010-06-11 616-325-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2010-06-09 616-920-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA MI
2010-06-07 616-843-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDHAVEN MI
2010-06-03 616-258-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2010-06-03 616-438-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2010-06-03 616-438-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-06-03 616-438-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-06-02 616-414-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRANDHAVEN MI
2010-06-01 616-607-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRANDHAVEN MI
2010-05-20 616-206-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-05-20 616-438-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2010-05-20 616-795-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2010-05-17 616-214-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-05-10 616-322-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-04-29 616-438-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2010-04-29 616-438-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2010-04-29 616-438-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2010-04-29 616-438-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2010-04-29 616-438-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2010-04-29 616-607-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRANDHAVEN MI
2010-04-08 616-730-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BYRON CTR MI
2010-04-02 616-965-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C GRAND RPDS MI
2010-03-22 616-795-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLAND MI
2010-03-18 616-795-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2010-03-17 616-884-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ROCKFORD MI
2010-03-10 616-920-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ADA MI
2010-03-08 616-414-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E GRANDHAVEN MI
2010-03-08 616-953-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ZEELAND MI
2010-03-04 616-258-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C GRAND RPDS MI
2010-03-01 616-264-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-03-01 616-264-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-02-24 616-214-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2010-02-24 616-258-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J GRAND RPDS MI
2010-02-19 616-264-6XXX 6000–6999Assigned TELNET WORLDWIDE, INC. 817J GRAND RPDS MI
2010-02-17 616-439-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CEDAR SPG MI
2010-02-16 616-374-9XXX 9000–9999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L LAKEODESSA MI
2010-02-16 616-438-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C GRAND RPDS MI
2010-02-16 616-528-6XXX 6000–6999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L CALEDONIA MI
2010-02-16 616-795-7XXX 7000–7999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L HOLLAND MI
2010-02-09 616-795-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2010-01-29 616-264-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-01-29 616-264-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-01-25 616-209-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HUDSONVL MI
2010-01-25 616-258-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2010-01-25 616-264-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C GRAND RPDS MI
2010-01-25 616-528-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CALEDONIA MI
2010-01-25 616-541-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DUTTON 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.