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
2006-08-04 248-305-1XXX 1000–1999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 NORTHVILLE MI
2006-08-04 248-313-5XXX 5000–5999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 WALLEDLAKE MI
2006-08-04 248-387-6XXX 6000–6999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 COMMERCE MI
2006-08-04 248-387-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 COMMERCE MI
2006-08-04 248-394-3XXX 3000–3999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 CLARKSTON MI
2006-08-04 248-419-3XXX 3000–3999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 W BLOOMFLD MI
2006-08-04 248-461-8XXX 8000–8999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 DRAYTON PL MI
2006-08-04 248-497-6XXX 6000–6999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2006-08-04 248-497-7XXX 7000–7999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2006-08-04 248-556-7XXX 7000–7999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 ROYAL OAK MI
2006-08-04 248-579-1XXX 1000–1999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 FARMINGTON MI
2006-08-04 248-630-7XXX 7000–7999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 PONTIAC MI
2006-08-04 248-687-7XXX 7000–7999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 TROY MI
2006-08-04 248-690-4XXX 4000–4999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 LAKE ORION MI
2006-08-04 248-957-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 FARMINGTON MI
2006-07-24 248-481-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2006-07-24 248-481-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2006-07-24 248-720-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2006-07-24 248-720-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2006-07-24 248-924-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2006-07-24 248-924-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2006-07-24 248-924-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2006-07-18 248-719-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2006-07-07 248-707-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2006-07-06 248-618-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J DRAYTON PL MI
2006-07-06 248-648-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PONTIAC MI
2006-06-28 248-845-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LAKE ORION MI
2006-06-22 248-677-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C ROYAL OAK MI
2006-06-16 248-504-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2006-06-16 248-917-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2006-06-16 248-917-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2006-06-16 248-918-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2006-06-15 248-366-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J COMMERCE MI
2006-06-15 248-562-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J W BLOOMFLD MI
2006-06-15 248-714-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MILFDWH LK MI
2006-06-08 248-732-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C PONTIAC MI
2006-05-25 248-469-1XXX 1000–1999Assigned CYNERGYCOMM.NET, INC. - MI 9245 SOUTHFIELD MI
2006-05-18 248-835-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TROY MI
2006-05-17 248-566-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BIRMINGHAM MI
2006-05-15 248-720-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 TROY MI
2006-05-15 248-896-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C WALLEDLAKE MI
2006-05-10 248-230-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J PONTIAC MI
2006-05-04 248-595-0XXX 0000–0999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 SOUTHFIELD MI
2006-05-03 248-200-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SOUTHFIELD MI
2006-04-21 248-556-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROYAL OAK MI
2006-04-18 248-200-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SOUTHFIELD MI
2006-04-14 248-556-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2006-04-10 248-977-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2006-03-10 248-732-4XXX 4000–4999Assigned MICHIGAN BELL TEL CO 9323 PONTIAC MI
2006-03-10 248-732-5XXX 5000–5999Assigned MICHIGAN BELL TEL CO 9323 PONTIAC 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.