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
2017-02-21 209-318-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OAKDALE CA
2017-02-09 209-447-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2017-02-09 209-702-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2017-02-09 209-718-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2017-01-20 209-237-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 TRACY CA
2017-01-20 209-237-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 TRACY CA
2017-01-19 209-905-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E STOCKTON CA
2017-01-17 209-592-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LOS BANOS CA
2017-01-13 209-281-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MODESTO CA
2017-01-11 209-637-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TRACY CA
2017-01-11 209-905-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2017-01-11 209-905-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2017-01-11 209-905-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2017-01-09 209-360-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2017-01-09 209-360-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2017-01-09 209-360-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2017-01-09 209-850-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TURLOCK CA
2016-12-30 209-459-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TUOLUMNE CA
2016-12-20 209-493-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OAKDALE CA
2016-12-20 209-905-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2016-12-20 209-905-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2016-12-16 209-308-1XXX 1000–1999Assigned TELNYX LLC 073H MERCED CA
2016-12-06 209-493-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OAKDALE CA
2016-11-28 209-203-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2016-11-28 209-237-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TRACY CA
2016-11-28 209-280-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LODI CA
2016-11-28 209-621-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HUGHSON CA
2016-11-21 209-905-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-11-21 209-905-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-11-16 209-237-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C TRACY CA
2016-11-16 209-360-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MODESTO CA
2016-11-16 209-490-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-11-16 209-493-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C OAKDALE CA
2016-11-14 209-245-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLYMOUTH CA
2016-11-14 209-490-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F STOCKTON CA
2016-11-09 209-360-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-11-09 209-360-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-11-08 209-592-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LOS BANOS CA
2016-11-08 209-707-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2016-11-08 209-707-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2016-11-04 209-448-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HUGHSON CA
2016-11-04 209-804-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCALON CA
2016-11-03 209-360-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MODESTO CA
2016-10-31 209-490-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2016-10-31 209-641-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2016-10-31 209-641-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STOCKTON CA
2016-10-27 209-280-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LODI CA
2016-10-27 209-707-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MANTECA CA
2016-10-27 209-718-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MODESTO CA
2016-10-21 209-203-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ATWATER 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.