NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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, last 30 days — NPA 586
NEW CINGULAR WIRELESS PCS, LLC - IL 1
INTRADO COMMUNICATIONS, LLC 1
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
2006-01-04 586-222-7XXX 7000–7999Assigned METROPCS, INC. 5562 ROSEVILLE MI
2006-01-04 586-222-8XXX 8000–8999Assigned METROPCS, INC. 5562 ROSEVILLE MI
2006-01-04 586-222-9XXX 9000–9999Assigned METROPCS, INC. 5562 ROSEVILLE MI
2006-01-04 586-339-4XXX 4000–4999Assigned METROPCS, INC. 5562 NEW HAVEN MI
2006-01-04 586-339-5XXX 5000–5999Assigned METROPCS, INC. 5562 NEW HAVEN MI
2006-01-04 586-625-2XXX 2000–2999Assigned METROPCS, INC. 5562 ARMADA MI
2006-01-04 586-649-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MT CLEMENS MI
2006-01-04 586-738-4XXX 4000–4999Assigned METROPCS, INC. 5562 MT CLEMENS MI
2006-01-04 586-738-7XXX 7000–7999Assigned METROPCS, INC. 5562 MT CLEMENS MI
2006-01-04 586-843-7XXX 7000–7999Assigned METROPCS, INC. 5562 UTICA MI
2006-01-04 586-843-8XXX 8000–8999Assigned METROPCS, INC. 5562 UTICA MI
2006-01-04 586-868-3XXX 3000–3999Assigned METROPCS, INC. 5562 MT CLEMENS MI
2006-01-04 586-879-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ROSEVILLE MI
2006-01-04 586-930-2XXX 2000–2999Assigned METROPCS, INC. 5562 UTICA MI
2006-01-04 586-935-2XXX 2000–2999Assigned METROPCS, INC. 5562 WASHINGTON MI
2006-01-03 586-744-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WARREN MI
2005-12-21 586-884-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J UTICA MI
2005-12-15 586-360-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K ROSEVILLE MI
2005-12-06 586-501-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CENTERLINE MI
2005-12-06 586-501-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CENTERLINE MI
2005-11-22 586-477-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J MT CLEMENS MI
2005-11-17 586-646-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 NEW HAVEN MI
2005-11-09 586-330-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 NEWBALTIMR MI
2005-11-09 586-420-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 ROSEVILLE MI
2005-11-09 586-430-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 RICHMOND MI
2005-11-09 586-540-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ROMEO MI
2005-11-09 586-744-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 WARREN MI
2005-11-09 586-930-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 UTICA MI
2005-11-09 586-992-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 WASHINGTON MI
2005-11-08 586-339-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 NEW HAVEN MI
2005-11-08 586-510-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 CENTERLINE MI
2005-11-08 586-588-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 ARMADA MI
2005-11-08 586-840-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 MT CLEMENS MI
2005-11-07 586-623-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ROMEO MI
2005-11-07 586-623-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ROMEO MI
2005-11-07 586-879-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ROSEVILLE MI
2005-11-03 586-884-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 UTICA MI
2005-11-03 586-884-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 UTICA MI
2005-10-17 586-453-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROMEO MI
2005-10-14 586-804-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WARREN MI
2005-10-04 586-258-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WARREN MI
2005-09-27 586-601-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ROSEVILLE MI
2005-09-27 586-623-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ROMEO MI
2005-09-27 586-623-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ROMEO MI
2005-09-21 586-473-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ARMADA MI
2005-08-19 586-744-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WARREN MI
2005-08-19 586-744-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WARREN MI
2005-08-19 586-744-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WARREN MI
2005-08-15 586-439-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROSEVILLE MI
2005-08-15 586-580-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 UTICA 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.