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
2012-06-29 248-817-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2012-06-18 248-572-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E OXFORD MI
2012-05-18 248-826-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2012-05-17 248-834-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LAKE ORION MI
2012-05-10 248-803-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2012-05-10 248-803-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2012-05-10 248-803-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2012-05-10 248-803-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2012-05-10 248-803-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2012-05-02 248-278-6XXX 6000–6999Assigned WOW! INTERNET, CABLE AND PHONE 961J SOUTH LYON MI
2012-04-27 248-283-7XXX 7000–7999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L BIRMINGHAM MI
2012-03-27 248-281-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SOUTHFIELD MI
2012-03-20 248-266-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C ROCHESTER MI
2012-03-20 248-278-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C SOUTH LYON MI
2012-03-20 248-328-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C HOLLY MI
2012-03-20 248-479-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C FARMINGTON MI
2012-03-20 248-558-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C CLARKSTON MI
2012-03-20 248-572-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2012-03-20 248-574-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C WALLEDLAKE MI
2012-03-20 248-595-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C SOUTHFIELD MI
2012-03-20 248-671-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C W BLOOMFLD MI
2012-03-20 248-742-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C DRAYTON PL MI
2012-03-20 248-834-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C LAKE ORION MI
2012-03-19 248-591-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2012-03-07 248-266-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ROCHESTER MI
2012-03-07 248-602-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E TROY MI
2012-03-07 248-702-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E W BLOOMFLD MI
2012-03-07 248-820-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLY MI
2012-03-07 248-871-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FARMINGTON MI
2012-03-07 248-878-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-03-07 248-878-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2012-03-06 248-220-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C BIRMINGHAM MI
2012-03-05 248-602-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C TROY MI
2012-03-05 248-712-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C BIRMINGHAM MI
2012-02-28 248-826-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C NORTHVILLE MI
2012-02-08 248-864-7XXX 7000–7999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L SOUTHFIELD MI
2012-02-02 248-291-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C ROYAL OAK MI
2012-02-02 248-392-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2012-02-01 248-817-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 TROY MI
2012-01-31 248-236-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 OXFORD MI
2012-01-30 248-987-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FARMINGTON MI
2012-01-25 248-826-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C NORTHVILLE MI
2011-12-29 248-785-7XXX 7000–7999Assigned METROPCS, INC. 5562 W BLOOMFLD MI
2011-12-29 248-785-8XXX 8000–8999Assigned METROPCS, INC. 5562 W BLOOMFLD MI
2011-12-22 248-558-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K CLARKSTON MI
2011-12-16 248-266-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROCHESTER MI
2011-12-09 248-639-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PONTIAC MI
2011-12-01 248-254-0XXX 0000–0999Assigned METROPCS, INC. 5562 W BLOOMFLD MI
2011-12-01 248-862-4XXX 4000–4999Assigned METROPCS, INC. 5562 W BLOOMFLD MI
2011-11-22 248-582-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C 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.