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
2004-09-17 810-887-2XXX 2000–2999Assigned MICHIGAN BELL TEL CO 9323 PORT HURON MI
2004-09-17 810-887-3XXX 3000–3999Assigned MICHIGAN BELL TEL CO 9323 PORT HURON MI
2004-09-17 810-887-4XXX 4000–4999Assigned MICHIGAN BELL TEL CO 9323 PORT HURON MI
2004-09-17 810-887-5XXX 5000–5999Assigned MICHIGAN BELL TEL CO 9323 PORT HURON MI
2004-09-17 810-887-6XXX 6000–6999Assigned MICHIGAN BELL TEL CO 9323 PORT HURON MI
2004-09-01 810-224-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 BRIGHTON MI
2004-09-01 810-471-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2004-08-25 810-836-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-08-18 810-471-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2004-08-16 810-824-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2004-08-04 810-422-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-07-16 810-488-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2004-07-15 810-471-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-07-15 810-471-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-07-06 810-275-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2004-07-06 810-275-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2004-07-06 810-886-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BROWN CITY MI
2004-06-30 810-357-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2004-06-16 810-422-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-06-16 810-422-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-05-20 810-877-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2004-05-06 810-422-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-05-06 810-824-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2004-03-09 810-201-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PT SANILAC MI
2004-03-09 810-223-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-03-09 810-223-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2004-02-04 810-378-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PECK MI
2004-02-04 810-641-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SNOVER MI
2004-02-04 810-643-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MARINECITY MI
2004-02-04 810-645-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PT SANILAC MI
2004-02-04 810-824-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PORT HURON MI
2004-02-03 810-209-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BYRON MI
2004-02-03 810-377-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J LEXINGTON MI
2004-02-03 810-476-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J APPLEGATE MI
2004-02-03 810-512-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ALGONAC MI
2004-02-03 810-544-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CARSONVL MI
2004-02-03 810-546-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CROSWELL MI
2004-01-16 810-373-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 FENTON MI
2004-01-13 810-991-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 HARTLAND MI
2003-12-30 810-867-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J FLUSHING MI
2003-12-23 810-637-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ST CLAIR MI
2003-12-23 810-824-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2003-12-19 810-537-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J SANDUSKY MI
2003-12-11 810-373-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FENTON MI
2003-12-10 810-224-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BRIGHTON MI
2003-12-10 810-547-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J CLIMTMORRS MI
2003-12-10 810-637-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ST CLAIR MI
2003-12-10 810-866-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J GRANDBLANC MI
2003-12-05 810-357-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2003-11-19 810-882-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J LAPEER 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.