NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

6 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 313
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 4
OPENTACT INC. 1
INTRADO COMMUNICATIONS, LLC 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
2026-02-04 313-853-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2026-02-04 313-860-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2026-02-04 313-860-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2026-02-04 313-860-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2026-02-04 313-860-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2026-02-02 313-616-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN1 MI
2026-02-02 313-616-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN1 MI
2026-02-02 313-616-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN1 MI
2026-01-13 313-313-3XXX 3000–3999Assigned AHOI LLC 883K DETROITZN6 MI
2025-12-30 313-857-0XXX 0000–0999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN6 MI
2025-12-30 313-857-1XXX 1000–1999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN6 MI
2025-12-30 313-857-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN6 MI
2025-12-30 313-857-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN6 MI
2025-12-22 313-830-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-12-22 313-830-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-11-20 313-810-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2025-11-20 313-830-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2025-11-20 313-830-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2025-11-20 313-830-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2025-11-20 313-830-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2025-11-07 313-450-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-11-07 313-683-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-11-07 313-683-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-11-07 313-809-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-11-07 313-810-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-10-06 313-620-2XXX 2000–2999Assigned HD CARRIER LLC 321J DETROITZN3 MI
2025-10-06 313-732-3XXX 3000–3999Assigned HD CARRIER LLC 321J DETROITZN2 MI
2025-10-06 313-857-2XXX 2000–2999Assigned HD CARRIER LLC 321J DETROITZN6 MI
2025-09-09 313-809-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-09-09 313-809-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-09-09 313-809-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-09-09 313-809-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-09-09 313-809-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2025-09-05 313-785-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2025-09-05 313-785-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2025-09-05 313-785-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2025-09-05 313-857-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2025-09-05 313-857-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2025-09-05 313-857-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2025-09-05 313-857-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2025-09-05 313-857-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2025-08-04 313-344-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN2 MI
2025-08-04 313-708-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DETROITZN2 MI
2025-07-16 313-616-9XXX 9000–9999Assigned WAVENATION, LLC 700J DETROITZN1 MI
2025-07-15 313-807-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2025-07-15 313-807-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2025-07-15 313-809-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2025-07-15 313-809-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2025-07-15 313-809-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2025-07-15 313-809-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 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.