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
2006-03-24 810-354-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 FENTON MI
2006-03-10 810-740-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 ST CLAIR MI
2006-03-06 810-341-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2006-03-06 810-341-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2006-02-27 810-597-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2006-02-22 810-836-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2006-02-10 810-356-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LAPEER MI
2006-02-02 810-344-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C GRANDBLANC MI
2006-02-02 810-378-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PECK MI
2006-02-02 810-519-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C FENTON MI
2006-02-02 810-547-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C CLIMTMORRS MI
2006-02-02 810-867-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C FLUSHING MI
2006-01-26 810-655-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J RANKIN MI
2006-01-25 810-735-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LINDEN MI
2006-01-17 810-547-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CLIMTMORRS MI
2006-01-17 810-867-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J FLUSHING MI
2006-01-16 810-266-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BYRON MI
2006-01-16 810-269-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SANDUSKY MI
2006-01-16 810-344-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRANDBLANC MI
2006-01-16 810-377-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LEXINGTON MI
2006-01-13 810-265-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FLINT MI
2006-01-13 810-344-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J GRANDBLANC MI
2006-01-04 810-458-3XXX 3000–3999Assigned METROPCS, INC. 5562 LINDEN MI
2006-01-04 810-588-0XXX 0000–0999Assigned METROPCS, INC. 5562 BRIGHTON MI
2006-01-04 810-588-1XXX 1000–1999Assigned METROPCS, INC. 5562 BRIGHTON MI
2006-01-04 810-597-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2006-01-04 810-689-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORT HURON MI
2006-01-04 810-887-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2006-01-04 810-936-3XXX 3000–3999Assigned METROPCS, INC. 5562 FENTON MI
2005-12-30 810-356-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LAPEER MI
2005-12-30 810-356-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LAPEER MI
2005-12-28 810-360-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BRIGHTON MI
2005-12-27 810-853-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2005-12-06 810-412-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DAVISON MI
2005-12-06 810-412-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DAVISON MI
2005-12-06 810-936-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FENTON MI
2005-12-06 810-936-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FENTON MI
2005-12-01 810-207-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 HARTLAND MI
2005-11-14 810-597-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J FLINT MI
2005-11-09 810-325-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 GOODELLS MI
2005-11-09 810-370-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 BYRON MI
2005-11-09 810-374-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 OTISVILLE MI
2005-11-09 810-410-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 FLINT MI
2005-11-09 810-535-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 MEMPHIS MI
2005-11-09 810-740-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ST CLAIR MI
2005-11-09 810-827-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 EMMETT MI
2005-11-09 810-844-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 BRIGHTON MI
2005-11-09 810-867-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 FLUSHING MI
2005-11-09 810-936-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 FENTON MI
2005-11-09 810-990-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 PORT HURON 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.