NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

14 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 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
2005-06-27 810-344-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 GRANDBLANC MI
2005-06-27 810-346-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 BROWN CITY MI
2005-06-27 810-355-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 BRIGHTON MI
2005-06-27 810-366-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 DECKERVL MI
2005-06-27 810-371-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 CAPAC MI
2005-06-27 810-373-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 FENTON MI
2005-06-27 810-384-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 EMMETT MI
2005-06-27 810-410-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 FLINT MI
2005-06-27 810-476-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 APPLEGATE MI
2005-06-27 810-512-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 ALGONAC MI
2005-06-27 810-545-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 COLUMBIAVL MI
2005-06-27 810-546-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 CROSWELL MI
2005-06-27 810-547-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CLIMTMORRS MI
2005-06-27 810-673-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 ALMONT MI
2005-06-27 810-867-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 FLUSHING MI
2005-06-23 810-991-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 HARTLAND MI
2005-06-21 810-272-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 LAPEER MI
2005-06-20 810-373-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 FENTON MI
2005-06-20 810-519-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 FENTON MI
2005-06-20 810-852-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 BRIGHTON MI
2005-06-09 810-373-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J FENTON MI
2005-06-09 810-488-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PORT HURON MI
2005-06-09 810-512-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ALGONAC MI
2005-06-08 810-488-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2005-05-31 810-512-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ALGONAC MI
2005-05-02 810-637-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ST CLAIR MI
2005-04-27 810-820-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2005-04-27 810-877-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2005-04-11 810-874-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2005-04-11 810-874-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2005-03-31 810-515-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2005-03-31 810-515-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2005-03-14 810-471-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J FLINT MI
2005-03-11 810-887-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2005-03-10 810-515-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2005-03-10 810-515-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2005-03-10 810-515-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2005-03-09 810-420-2XXX 2000–2999Assigned METROPCS, INC. 5562 MARINECITY MI
2005-02-15 810-367-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SMITHS CRK MI
2005-02-15 810-392-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS MI
2005-02-15 810-420-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MARINECITY MI
2005-02-15 810-479-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PORT HURON MI
2005-02-15 810-991-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J HARTLAND MI
2005-02-14 810-515-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2005-02-14 810-515-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2005-02-11 810-420-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MARINECITY MI
2005-01-28 810-344-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 GRANDBLANC MI
2005-01-28 810-410-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2005-01-28 810-410-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2005-01-28 810-410-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT 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.