NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2016-10-21 209-203-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2016-10-19 209-490-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L STOCKTON CA
2016-10-14 209-641-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-10-14 209-641-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-10-14 209-641-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-10-14 209-641-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-10-05 209-278-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TRACY CA
2016-10-05 209-280-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LODI CA
2016-10-05 209-280-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LODI CA
2016-10-05 209-360-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-10-05 209-360-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-10-05 209-707-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2016-10-04 209-427-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TURLOCK CA
2016-10-03 209-641-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2016-09-19 209-448-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 HUGHSON CA
2016-09-16 209-841-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OAKDALE CA
2016-09-15 209-448-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HUGHSON CA
2016-09-14 209-637-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TRACY CA
2016-09-14 209-641-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C STOCKTON CA
2016-09-14 209-719-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERBANK CA
2016-09-13 209-431-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 JAMESTOWN CA
2016-09-13 209-435-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DOS PALOS CA
2016-09-08 209-707-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MANTECA CA
2016-09-07 209-641-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-09-07 209-641-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-09-01 209-306-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SANANDREAS CA
2016-08-30 209-279-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-08-30 209-279-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-08-30 209-279-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-08-30 209-279-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-08-26 209-360-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-08-26 209-877-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PLANADA CA
2016-08-24 209-273-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E JACKSON CA
2016-08-24 209-448-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HUGHSON CA
2016-08-24 209-893-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PLYMOUTH CA
2016-08-23 209-592-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LOS BANOS CA
2016-08-23 209-718-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-08-22 209-379-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E YOSEMITE CA
2016-08-22 209-435-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DOS PALOS CA
2016-08-18 209-279-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E STOCKTON CA
2016-08-17 209-278-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TRACY CA
2016-08-17 209-278-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TRACY CA
2016-08-17 209-635-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2016-08-17 209-635-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2016-08-16 209-443-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALLACE CA
2016-08-16 209-592-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOS BANOS CA
2016-08-15 209-707-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2016-08-15 209-707-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2016-08-15 209-719-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIVERBANK CA
2016-08-12 209-493-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OAKDALE CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.