NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 209
ONVOY, LLC - CA 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
2011-08-23 209-205-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MERCED CA
2011-08-23 209-216-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TURLOCK CA
2011-08-23 209-661-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MODESTO CA
2011-08-22 209-665-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MANTECA CA
2011-08-17 209-643-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2011-08-16 209-645-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C STOCKTON CA
2011-08-15 209-256-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 JACKSON CA
2011-08-15 209-837-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CROWS LDG CA
2011-08-12 209-661-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MODESTO CA
2011-08-11 209-647-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MANTECA CA
2011-08-11 209-894-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PATTERSON CA
2011-08-05 209-213-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNRA MAIN CA
2011-08-05 209-331-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LODI CA
2011-08-04 209-730-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E GALT CA
2011-08-03 209-661-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MODESTO CA
2011-07-28 209-375-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C YOSEMITE CA
2011-07-28 209-443-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WALLACE CA
2011-07-28 209-585-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TURLOCK CA
2011-07-28 209-585-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TURLOCK CA
2011-07-28 209-734-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C HERALD CA
2011-07-28 209-796-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C THORNTON CA
2011-07-28 209-800-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E STOCKTON CA
2011-07-28 209-800-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E STOCKTON CA
2011-07-28 209-800-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E STOCKTON CA
2011-07-28 209-917-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C LE GRAND CA
2011-07-28 209-962-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C GROVELAND CA
2011-07-19 209-661-3XXX 3000–3999Assigned METROPCS, INC. 5562 MODESTO CA
2011-07-14 209-213-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNRA MAIN CA
2011-07-14 209-229-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TRACY CA
2011-07-14 209-589-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2011-07-14 209-791-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MOKELUMNHL CA
2011-07-14 209-831-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TRACY CA
2011-07-11 209-216-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TURLOCK CA
2011-07-06 209-870-9XXX 9000–9999Assigned METROPCS, INC. 5562 STOCKTON CA
2011-06-27 209-213-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNRA MAIN CA
2011-06-27 209-354-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MERCED CA
2011-06-27 209-791-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MOKELUMNHL CA
2011-06-27 209-831-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TRACY CA
2011-06-17 209-661-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2011-06-17 209-661-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2011-06-16 209-206-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L TUOLUMNE CA
2011-06-16 209-432-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNRA JUNO CA
2011-06-16 209-536-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNRA MAIN CA
2011-06-16 209-984-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L JAMESTOWN CA
2011-06-15 209-790-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C IONE CA
2011-06-08 209-256-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C JACKSON CA
2011-06-08 209-439-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C PLANADA CA
2011-06-08 209-560-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C SUTTER CRK CA
2011-06-08 209-584-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C VALLEY SPG CA
2011-06-08 209-645-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA

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.