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
2019-06-03 248-940-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E BIRMINGHAM MI
2019-05-14 248-744-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROYAL OAK MI
2019-05-06 248-861-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CLARKSTON MI
2019-05-06 248-955-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ROYAL OAK MI
2019-05-03 248-940-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BIRMINGHAM MI
2019-05-01 248-970-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E W BLOOMFLD MI
2019-04-11 248-955-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-03-29 248-319-2XXX 2000–2999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2019-03-29 248-319-3XXX 3000–3999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2019-02-21 248-897-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PONTIAC MI
2019-02-21 248-920-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PONTIAC MI
2019-02-06 248-482-2XXX 2000–2999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G FARMINGTON MI
2019-02-06 248-780-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLY MI
2019-02-06 248-983-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLY MI
2019-02-06 248-983-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLY MI
2019-02-06 248-983-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLY MI
2019-02-06 248-983-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLY MI
2019-01-15 248-907-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FARMINGTON MI
2019-01-03 248-985-5XXX 5000–5999Assigned METROPCS, INC. 5562 W BLOOMFLD MI
2018-12-18 248-962-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2018-12-06 248-993-2XXX 2000–2999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2018-12-06 248-993-8XXX 8000–8999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2018-12-03 248-993-4XXX 4000–4999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2018-12-03 248-993-5XXX 5000–5999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2018-12-03 248-993-6XXX 6000–6999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2018-11-26 248-692-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J NORTHVILLE MI
2018-11-20 248-965-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROYAL OAK MI
2018-11-14 248-653-5XXX 5000–5999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G HOLLY MI
2018-11-14 248-940-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G BIRMINGHAM MI
2018-11-14 248-951-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ROYAL OAK MI
2018-11-14 248-970-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G W BLOOMFLD MI
2018-10-26 248-900-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ORTONVILLE MI
2018-10-23 248-993-3XXX 3000–3999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2018-10-15 248-832-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2018-10-15 248-832-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2018-10-15 248-832-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2018-10-15 248-832-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2018-10-15 248-832-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2018-09-21 248-814-3XXX 3000–3999Assigned METROPCS, INC. 5562 LAKE ORION MI
2018-09-19 248-208-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SOUTHFIELD MI
2018-09-19 248-226-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SOUTHFIELD MI
2018-09-19 248-450-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SOUTHFIELD MI
2018-09-18 248-450-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2018-09-07 248-653-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 HOLLY MI
2018-08-30 248-940-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G BIRMINGHAM MI
2018-08-21 248-985-7XXX 7000–7999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G W BLOOMFLD MI
2018-08-17 248-617-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C SOUTH LYON MI
2018-08-17 248-780-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C HOLLY MI
2018-08-17 248-861-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C CLARKSTON MI
2018-08-17 248-963-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C ROCHESTER 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.