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
2022-12-16 313-761-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C DETROITZN1 MI
2022-12-16 313-761-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C DETROITZN1 MI
2022-12-16 313-761-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DETROITZN1 MI
2022-12-16 313-761-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C DETROITZN1 MI
2022-12-08 313-428-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2022-12-08 313-428-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2022-12-08 313-428-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2022-12-06 313-696-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2022-12-06 313-696-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2022-12-06 313-696-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2022-12-06 313-696-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2022-12-02 313-696-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN4 MI
2022-12-02 313-696-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN4 MI
2022-12-02 313-696-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN4 MI
2022-12-02 313-696-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN4 MI
2022-11-23 313-698-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C DETROITZN3 MI
2022-11-23 313-698-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C DETROITZN3 MI
2022-11-09 313-470-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DETROITZN2 MI
2022-11-09 313-470-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C DETROITZN2 MI
2022-11-09 313-470-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C DETROITZN2 MI
2022-11-09 313-470-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C DETROITZN2 MI
2022-11-09 313-470-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C DETROITZN2 MI
2022-11-09 313-470-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C DETROITZN2 MI
2022-11-09 313-490-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2022-11-09 313-726-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2022-11-09 313-726-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2022-11-08 313-454-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C DETROITZN3 MI
2022-11-08 313-726-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C DETROITZN6 MI
2022-11-01 313-315-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2022-11-01 313-326-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2022-11-01 313-353-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2022-11-01 313-428-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2022-10-27 313-279-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2022-10-27 313-279-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2022-10-27 313-279-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2022-10-27 313-659-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2022-10-17 313-470-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DETROITZN2 MI
2022-10-17 313-470-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DETROITZN2 MI
2022-10-17 313-470-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DETROITZN2 MI
2022-10-17 313-470-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DETROITZN2 MI
2022-10-14 313-944-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DETROITZN2 MI
2022-10-13 313-761-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN1 MI
2022-10-13 313-761-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN1 MI
2022-10-13 313-761-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN1 MI
2022-10-13 313-761-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN1 MI
2022-10-12 313-639-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN1 MI
2022-10-12 313-639-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN1 MI
2022-10-12 313-726-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2022-10-10 313-604-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C DETROITZN1 MI
2022-10-10 313-604-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DETROITZN1 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.