NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

6 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 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
2023-09-27 313-698-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN3 MI
2023-09-19 313-698-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2023-09-11 313-214-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-214-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-229-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-353-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-428-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-428-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-09-11 313-435-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN6 MI
2023-09-11 313-773-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-09-11 313-812-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-817-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-844-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-844-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-09-11 313-844-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-08-08 313-214-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-08-08 313-214-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-08-08 313-315-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-08-08 313-326-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-08-08 313-353-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-08-04 313-431-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN4 MI
2023-08-04 313-431-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN4 MI
2023-08-03 313-934-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN4 MI
2023-08-02 313-287-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-08-02 313-287-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-08-02 313-287-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-08-02 313-713-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-08-02 313-713-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-07-26 313-370-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN4 MI
2023-07-25 313-229-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-07-25 313-229-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-07-25 313-229-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-07-25 313-352-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-07-25 313-352-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DETROITZN5 MI
2023-07-21 313-210-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C DETROITZN1 MI
2023-07-21 313-315-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C DETROITZN5 MI
2023-07-21 313-370-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C DETROITZN4 MI
2023-07-21 313-435-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C DETROITZN6 MI
2023-07-21 313-698-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C DETROITZN3 MI
2023-07-21 313-708-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C DETROITZN2 MI
2023-07-20 313-817-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2023-07-18 313-708-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H DETROITZN2 MI
2023-07-18 313-708-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H DETROITZN2 MI
2023-07-07 313-353-3XXX 3000–3999Assigned TERRA NOVA TELECOM INC. 145J DETROITZN5 MI
2023-07-05 313-391-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-07-05 313-391-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-07-05 313-391-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-07-05 313-391-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-07-05 313-500-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2023-07-05 313-817-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 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.