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
2015-03-04 209-425-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2015-03-03 209-779-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HUGHSON CA
2015-03-02 209-949-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 STOCKTON CA
2015-03-02 209-949-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 STOCKTON CA
2015-03-02 209-949-6XXX 6000–6999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 STOCKTON CA
2015-03-02 209-949-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 STOCKTON CA
2015-03-02 209-949-8XXX 8000–8999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 STOCKTON CA
2015-03-02 209-949-9XXX 9000–9999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 STOCKTON CA
2015-02-27 209-289-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2015-02-27 209-289-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2015-02-27 209-900-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2015-02-24 209-421-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2015-02-24 209-421-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2015-02-24 209-421-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2015-02-19 209-395-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2015-02-19 209-395-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2015-02-19 209-395-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2015-02-19 209-841-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J OAKDALE CA
2015-02-19 209-851-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2015-02-12 209-289-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2015-02-12 209-289-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2015-02-12 209-289-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2015-02-12 209-328-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2015-02-11 209-421-1XXX 1000–1999Assigned METROPCS, INC. 5562 MERCED CA
2015-02-11 209-421-2XXX 2000–2999Assigned METROPCS, INC. 5562 MERCED CA
2015-02-11 209-421-3XXX 3000–3999Assigned METROPCS, INC. 5562 MERCED CA
2015-02-11 209-421-4XXX 4000–4999Assigned METROPCS, INC. 5562 MERCED CA
2015-02-11 209-421-5XXX 5000–5999Assigned METROPCS, INC. 5562 MERCED CA
2015-02-10 209-326-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2015-02-09 209-737-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOS BANOS CA
2015-02-03 209-289-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MODESTO CA
2015-02-03 209-328-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MANTECA CA
2015-02-03 209-421-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MERCED CA
2015-02-03 209-850-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F TURLOCK CA
2015-01-29 209-426-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 LODI CA
2015-01-23 209-714-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SUTTER CRK CA
2015-01-20 209-421-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2015-01-19 209-289-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MODESTO CA
2015-01-19 209-289-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2015-01-19 209-317-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E COULTERVL CA
2015-01-19 209-442-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WTFR MAIN CA
2015-01-14 209-347-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARIPOSA CA
2014-12-23 209-328-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2014-12-23 209-328-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2014-12-16 209-759-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CLEMENTS CA
2014-12-16 209-886-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FARMINGTON CA
2014-12-16 209-887-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LINDEN CA
2014-12-15 209-822-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ANGELSCAMP CA
2014-12-15 209-895-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PATTERSON CA
2014-12-11 209-284-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MODESTO 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.