NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, 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
2003-07-31 248-255-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WALLEDLAKE MI
2003-07-31 248-941-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2003-07-31 248-941-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2003-07-28 248-236-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 OXFORD MI
2003-07-28 248-237-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 AUBURN HTS MI
2003-07-28 248-242-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 COMMERCE MI
2003-07-28 248-257-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DRAYTON PL MI
2003-07-28 248-438-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 WALLEDLAKE MI
2003-07-28 248-507-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CLARKSTON MI
2003-07-28 248-782-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SOUTH LYON MI
2003-04-28 248-255-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WALLEDLAKE MI
2003-04-28 248-255-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WALLEDLAKE MI
2003-04-28 248-255-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WALLEDLAKE MI
2003-04-28 248-721-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROYAL OAK MI
2003-04-28 248-721-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROYAL OAK MI
2003-04-28 248-721-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROYAL OAK MI
2003-04-28 248-721-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROYAL OAK MI
2003-04-28 248-941-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2003-04-28 248-941-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2003-04-28 248-941-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2003-04-18 248-778-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2003-04-14 248-250-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-03-06 248-250-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-02-21 248-250-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-02-21 248-264-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SOUTH LYON MI
2003-02-21 248-438-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WALLEDLAKE MI
2003-02-21 248-529-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MILFDWH LK MI
2003-02-12 248-264-2XXX 2000–2999Assigned 123.NET, LLC 2550 SOUTH LYON MI
2003-02-12 248-632-1XXX 1000–1999Assigned WOW! INTERNET, CABLE AND PHONE 961J ROYAL OAK MI
2003-02-12 248-835-1XXX 1000–1999Assigned WOW! INTERNET, CABLE AND PHONE 961J TROY MI
2003-02-11 248-598-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J AUBURN HTS MI
2003-02-04 248-250-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-02-04 248-250-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-01-24 248-256-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J OXFORD MI
2003-01-13 248-327-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SOUTHFIELD MI
2003-01-13 248-430-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BIRMINGHAM MI
2003-01-13 248-841-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROCHESTER MI
2003-01-10 248-635-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-01-10 248-635-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-01-10 248-635-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-01-10 248-635-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2003-01-02 248-215-5XXX 5000–5999Assigned 123.NET, LLC 2550 HOLLY MI
2003-01-02 248-228-3XXX 3000–3999Assigned 123.NET, LLC 2550 SOUTHFIELD MI
2003-01-02 248-277-3XXX 3000–3999Assigned 123.NET, LLC 2550 NORTHVILLE MI
2003-01-02 248-381-8XXX 8000–8999Assigned 123.NET, LLC 2550 FARMINGTON MI
2003-01-02 248-434-5XXX 5000–5999Assigned 123.NET, LLC 2550 TROY MI
2003-01-02 248-529-0XXX 0000–0999Assigned 123.NET, LLC 2550 MILFDWH LK MI
2002-12-27 248-241-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CLARKSTON MI
2002-12-19 248-635-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2002-12-06 248-242-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J COMMERCE 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.