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
2012-09-20 248-733-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ROYAL OAK MI
2012-09-20 248-939-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FARMINGTON MI
2012-09-14 248-289-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C AUBURN HTS MI
2012-09-14 248-694-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C COMMERCE MI
2012-09-05 248-602-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-09-05 248-813-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-09-05 248-817-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-09-05 248-817-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-09-05 248-878-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-09-05 248-878-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-08-29 248-602-4XXX 4000–4999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 TROY MI
2012-08-24 248-278-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTH LYON MI
2012-08-22 248-372-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SOUTHFIELD MI
2012-08-22 248-392-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PONTIAC MI
2012-08-22 248-457-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E TROY MI
2012-08-22 248-817-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 TROY MI
2012-08-17 248-220-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2012-08-17 248-712-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2012-08-17 248-809-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SOUTHFIELD MI
2012-08-17 248-864-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SOUTHFIELD MI
2012-08-06 248-329-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2012-08-06 248-329-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2012-08-06 248-329-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2012-08-06 248-329-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2012-08-06 248-329-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2012-08-02 248-878-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-08-02 248-878-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-08-02 248-878-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-08-02 248-878-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-08-02 248-878-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-07-31 248-639-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PONTIAC MI
2012-07-31 248-639-1XXX 1000–1999Assigned METROPCS, INC. 5562 PONTIAC MI
2012-07-13 248-536-2XXX 2000–2999Assigned BHN IP ENABLED SERVICES, LLC 045L FARMINGTON MI
2012-07-13 248-792-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BIRMINGHAM MI
2012-07-09 248-445-0XXX 0000–0999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-445-1XXX 1000–1999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-445-2XXX 2000–2999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-445-3XXX 3000–3999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-445-5XXX 5000–5999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-445-6XXX 6000–6999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-445-7XXX 7000–7999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-445-8XXX 8000–8999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-445-9XXX 9000–9999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-727-5XXX 5000–5999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-809-7XXX 7000–7999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-809-8XXX 8000–8999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-864-3XXX 3000–3999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-864-6XXX 6000–6999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-07-09 248-905-2XXX 2000–2999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2012-06-29 248-234-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SOUTHFIELD 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.