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
2018-02-22 616-600-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-02-22 616-600-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-02-22 616-600-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2018-02-20 616-489-2XXX 2000–2999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L IONIA MI
2018-02-15 616-201-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C GRANDHAVEN MI
2018-02-15 616-207-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C LOWELL MI
2018-02-15 616-583-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BYRON CTR MI
2018-02-12 616-274-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ADA MI
2018-02-07 616-268-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRANDHAVEN MI
2018-01-18 616-201-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRANDHAVEN MI
2017-12-05 616-512-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E DUTTON MI
2017-12-04 616-431-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARNE MI
2017-11-29 616-239-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ZEELAND MI
2017-10-25 616-279-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2017-10-23 616-729-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2017-10-23 616-729-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2017-10-23 616-840-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2017-10-23 616-840-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2017-10-18 616-384-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C COOPERSVL MI
2017-10-05 616-600-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C GRAND RPDS MI
2017-10-05 616-600-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C GRAND RPDS MI
2017-09-28 616-226-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2017-09-27 616-279-0XXX 0000–0999Assigned METROPCS, INC. 5562 GRAND RPDS MI
2017-09-27 616-279-4XXX 4000–4999Assigned METROPCS, INC. 5562 GRAND RPDS MI
2017-09-27 616-279-5XXX 5000–5999Assigned METROPCS, INC. 5562 GRAND RPDS MI
2017-09-15 616-268-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDHAVEN MI
2017-09-15 616-729-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2017-09-15 616-729-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2017-09-15 616-729-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2017-09-15 616-729-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2017-09-15 616-729-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2017-08-11 616-294-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 HOLLAND MI
2017-07-24 616-335-6XXX 6000–6999Assigned 123.NET, LLC 2550 HOLLAND MI
2017-07-19 616-251-4XXX 4000–4999Assigned METROPCS, INC. 5562 HOLLAND MI
2017-07-19 616-251-7XXX 7000–7999Assigned METROPCS, INC. 5562 HOLLAND MI
2017-07-19 616-294-6XXX 6000–6999Assigned METROPCS, INC. 5562 HOLLAND MI
2017-07-17 616-251-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E HOLLAND MI
2017-07-17 616-251-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E HOLLAND MI
2017-07-10 616-213-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 CEDAR SPG MI
2017-07-07 616-279-7XXX 7000–7999Assigned METROPCS, INC. 5562 GRAND RPDS MI
2017-06-28 616-729-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D GRAND RPDS MI
2017-06-28 616-729-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D GRAND RPDS MI
2017-06-22 616-268-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRANDHAVEN MI
2017-06-22 616-268-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRANDHAVEN MI
2017-06-22 616-279-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2017-06-22 616-279-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2017-06-12 616-448-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K DRENTHE MI
2017-05-31 616-279-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2017-05-22 616-278-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2017-05-22 616-278-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 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.