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
2011-04-08 248-285-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-04-08 248-285-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-04-08 248-285-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-04-08 248-285-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-04-08 248-675-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2011-04-08 248-675-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2011-04-06 248-277-1XXX 1000–1999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2011-04-06 248-690-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J LAKE ORION MI
2011-04-05 248-979-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2011-03-30 248-692-3XXX 3000–3999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2011-03-29 248-675-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2011-03-24 248-862-8XXX 8000–8999Assigned METROPCS, INC. 5562 W BLOOMFLD MI
2011-03-22 248-758-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2011-03-21 248-803-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ORTONVILLE MI
2011-03-03 248-275-7XXX 7000–7999Assigned METROPCS, INC. 5562 TROY MI
2011-03-03 248-409-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-03-03 248-494-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-03-03 248-924-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2011-03-01 248-979-9XXX 9000–9999Assigned TELNET WORLDWIDE, INC. 817J BIRMINGHAM MI
2011-02-25 248-270-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E AUBURN HTS MI
2011-02-25 248-291-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ROYAL OAK MI
2011-02-25 248-382-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HOLLY MI
2011-02-25 248-491-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SOUTH LYON MI
2011-02-25 248-560-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WALLEDLAKE MI
2011-02-25 248-795-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CLARKSTON MI
2011-02-25 248-838-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PONTIAC MI
2011-02-24 248-567-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 NORTHVILLE MI
2011-02-22 248-820-4XXX 4000–4999Assigned METROPCS, INC. 5562 HOLLY MI
2011-02-17 248-952-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BIRMINGHAM MI
2011-02-11 248-277-0XXX 0000–0999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2011-02-11 248-724-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-02-11 248-724-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-02-10 248-277-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2011-02-10 248-430-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BIRMINGHAM MI
2011-02-10 248-793-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ORTONVILLE MI
2011-01-28 248-251-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2011-01-28 248-962-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2011-01-07 248-440-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SOUTHFIELD MI
2011-01-07 248-464-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-01-07 248-464-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-01-07 248-464-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-01-07 248-971-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C BIRMINGHAM MI
2010-12-30 248-284-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROYAL OAK MI
2010-12-30 248-731-1XXX 1000–1999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 BIRMINGHAM MI
2010-12-30 248-793-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ORTONVILLE MI
2010-12-21 248-830-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2010-12-21 248-830-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2010-12-20 248-962-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2010-12-15 248-675-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C NORTHVILLE MI
2010-12-15 248-849-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C 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.