NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2018-09-20 616-545-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C ORLEANS MI
2018-09-20 616-757-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C BORCULO MI
2018-09-19 616-256-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-09-19 616-256-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-09-19 616-655-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2018-09-18 616-256-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2018-09-18 616-268-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDHAVEN MI
2018-09-17 616-655-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G GRAND RPDS MI
2018-09-17 616-655-3XXX 3000–3999Assigned METROPCS, INC. 5562 GRAND RPDS MI
2018-09-17 616-655-4XXX 4000–4999Assigned METROPCS, INC. 5562 GRAND RPDS MI
2018-09-17 616-655-5XXX 5000–5999Assigned METROPCS, INC. 5562 GRAND RPDS MI
2018-09-17 616-655-6XXX 6000–6999Assigned METROPCS, INC. 5562 GRAND RPDS MI
2018-09-14 616-410-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J GRAND RPDS MI
2018-09-13 616-535-9XXX 9000–9999Assigned METROPCS, INC. 5562 SPARTA MI
2018-09-13 616-655-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-09-05 616-207-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LOWELL MI
2018-08-30 616-229-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G HUDSONVL MI
2018-08-24 616-201-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRANDHAVEN MI
2018-08-23 616-585-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C CEDAR SPG MI
2018-08-20 616-207-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C LOWELL MI
2018-08-20 616-208-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C BELDING MI
2018-08-20 616-219-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C DUTTON MI
2018-07-18 616-213-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 CEDAR SPG MI
2018-07-16 616-256-1XXX 1000–1999Assigned TELNET WORLDWIDE, INC. 817J GRAND RPDS MI
2018-06-27 616-840-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-06-27 616-840-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-06-27 616-840-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-06-27 616-840-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-06-21 616-655-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2018-06-21 616-655-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2018-06-20 616-741-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ZEELAND MI
2018-06-15 616-279-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2018-06-15 616-512-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DUTTON MI
2018-06-15 616-600-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2018-06-15 616-729-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2018-06-05 616-229-8XXX 8000–8999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G HUDSONVL MI
2018-06-01 616-416-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HOLLAND MI
2018-05-31 616-201-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C GRANDHAVEN MI
2018-05-02 616-275-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CALEDONIA MI
2018-04-13 616-416-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 HOLLAND MI
2018-02-22 616-428-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.