NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 248
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 520
NEW CINGULAR WIRELESS PCS, LLC - IL 384
ONVOY, LLCV - MI 332
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 287
METROPCS, INC. 227
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
2015-10-16 248-839-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2015-10-06 248-929-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C LAKE ORION MI
2015-10-01 248-606-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 AUBURN HTS MI
2015-09-28 248-965-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2015-09-23 248-791-5XXX 5000–5999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L PONTIAC MI
2015-09-21 248-791-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2015-09-11 248-997-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUBURN HTS MI
2015-09-11 248-997-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUBURN HTS MI
2015-09-09 248-951-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C ROYAL OAK MI
2015-09-04 248-949-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2015-09-04 248-949-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2015-09-04 248-949-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2015-09-02 248-704-4XXX 4000–4999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2015-08-31 248-533-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2015-08-28 248-489-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2015-08-28 248-516-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2015-08-28 248-653-9XXX 9000–9999Assigned METROPCS, INC. 5562 HOLLY MI
2015-08-21 248-270-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 AUBURN HTS MI
2015-08-21 248-965-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2015-08-19 248-621-0XXX 0000–0999Assigned 123.NET, LLC 2550 SOUTHFIELD MI
2015-08-18 248-600-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2015-08-18 248-600-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2015-08-18 248-600-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2015-08-18 248-600-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2015-08-13 248-864-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SOUTHFIELD MI
2015-07-31 248-938-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NORTHVILLE MI
2015-07-22 248-516-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J FARMINGTON MI
2015-07-22 248-897-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PONTIAC MI
2015-07-17 248-704-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2015-07-17 248-704-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2015-07-17 248-704-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2015-07-13 248-260-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 AUBURN HTS MI
2015-07-07 248-206-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROYAL OAK MI
2015-07-02 248-450-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K SOUTHFIELD MI
2015-07-01 248-847-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J W BLOOMFLD MI
2015-06-24 248-260-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 AUBURN HTS MI
2015-06-18 248-781-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TROY MI
2015-06-16 248-843-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2015-06-16 248-843-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2015-06-16 248-843-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2015-06-16 248-843-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2015-06-16 248-843-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2015-06-12 248-533-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2015-06-09 248-516-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G FARMINGTON MI
2015-06-09 248-516-2XXX 2000–2999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G FARMINGTON MI
2015-06-04 248-533-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2015-05-29 248-607-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROYAL OAK MI
2015-05-29 248-607-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROYAL OAK MI
2015-05-29 248-607-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROYAL OAK MI
2015-05-29 248-607-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROYAL OAK 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.