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
2008-09-15 616-856-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2008-09-15 616-856-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2008-09-10 616-622-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ALTO MI
2008-09-10 616-899-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CONKLIN MI
2008-09-08 616-528-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E CALEDONIA MI
2008-09-05 616-277-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BYRON CTR MI
2008-09-05 616-514-3XXX 3000–3999Assigned TELNET WORLDWIDE, INC. 817J GRAND RPDS MI
2008-09-04 616-606-6XXX 6000–6999Assigned TELNET WORLDWIDE, INC. 817J SPARTA MI
2008-08-28 616-805-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2008-08-28 616-805-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2008-08-28 616-994-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HOLLAND MI
2008-07-31 616-820-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2008-07-29 616-272-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2008-07-29 616-272-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2008-07-29 616-272-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2008-07-29 616-272-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2008-07-23 616-298-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2008-07-17 616-788-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E GREENVILLE MI
2008-07-07 616-818-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2008-07-07 616-818-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2008-06-24 616-272-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2008-06-24 616-272-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2008-06-18 616-607-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K GRANDHAVEN MI
2008-06-18 616-677-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E MARNE MI
2008-06-16 616-824-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENVILLE MI
2008-06-11 616-818-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K GRAND RPDS MI
2008-06-10 616-818-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J GRAND RPDS MI
2008-06-06 616-691-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRATTAN MI
2008-06-06 616-818-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2008-06-04 616-935-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GRANDHAVEN MI
2008-06-03 616-635-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2008-05-23 616-818-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2008-05-23 616-824-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GREENVILLE MI
2008-05-06 616-682-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ADA MI
2008-04-16 616-421-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LOWELL MI
2008-04-11 616-267-0XXX 0000–0999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-1XXX 1000–1999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-2XXX 2000–2999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-3XXX 3000–3999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-4XXX 4000–4999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-5XXX 5000–5999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-6XXX 6000–6999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-7XXX 7000–7999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-8XXX 8000–8999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-267-9XXX 9000–9999Assigned MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-11 616-272-7XXX 7000–7999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L GRAND RPDS MI
2008-04-10 616-818-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2008-04-10 616-818-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2008-04-09 616-796-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HOLLAND MI
2008-03-27 616-516-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 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.