NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

14 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, last 30 days — NPA 810
NEW CINGULAR WIRELESS PCS, LLC - IL 13
EXIANT 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
2006-09-21 810-771-0XXX 0000–0999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 GRANDBLANC MI
2006-09-18 810-360-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BRIGHTON MI
2006-09-13 810-350-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MONTROSE MI
2006-09-13 810-956-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORT HURON MI
2006-09-13 810-956-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORT HURON MI
2006-09-13 810-956-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORT HURON MI
2006-09-06 810-671-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ALGONAC MI
2006-08-25 810-250-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2006-08-25 810-275-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2006-08-25 810-275-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2006-08-25 810-407-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2006-08-24 810-375-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DRYDEN MI
2006-08-24 810-644-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SWARTZ CRK MI
2006-08-24 810-655-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 RANKIN MI
2006-08-22 810-673-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ALMONT MI
2006-08-21 810-545-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 COLUMBIAVL MI
2006-08-16 810-965-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2006-08-16 810-965-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2006-08-16 810-965-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2006-08-16 810-965-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2006-08-16 810-965-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2006-08-09 810-728-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2006-08-07 810-207-4XXX 4000–4999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 HARTLAND MI
2006-08-07 810-250-5XXX 5000–5999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 FLINT MI
2006-08-07 810-354-0XXX 0000–0999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 FENTON MI
2006-08-07 810-355-7XXX 7000–7999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 BRIGHTON MI
2006-08-07 810-479-8XXX 8000–8999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 PORT HURON MI
2006-08-07 810-660-6XXX 6000–6999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 LAPEER MI
2006-08-04 810-344-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 GRANDBLANC MI
2006-08-04 810-547-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 CLIMTMORRS MI
2006-08-04 810-660-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 LAPEER MI
2006-08-04 810-887-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2006-07-24 810-824-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PORT HURON MI
2006-07-24 810-824-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PORT HURON MI
2006-06-28 810-412-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DAVISON MI
2006-06-28 810-626-2XXX 2000–2999Assigned MICHIGAN BELL TEL CO 9323 BRIGHTON MI
2006-06-23 810-476-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 APPLEGATE MI
2006-06-12 810-355-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRIGHTON MI
2006-06-12 810-820-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C FLINT MI
2006-05-25 810-990-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2006-05-18 810-965-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2006-04-27 810-270-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 NORTH BRCH MI
2006-04-27 810-374-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 OTISVILLE MI
2006-04-27 810-487-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLUSHING MI
2006-04-27 810-547-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CLIMTMORRS MI
2006-04-27 810-683-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 IMLAY CITY MI
2006-04-06 810-250-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2006-04-06 810-740-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ST CLAIR MI
2006-03-30 810-391-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J FLINT MI
2006-03-28 810-837-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANDUSKY 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.