NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 909
ONVOY, LLC - CA 6
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
BANDWIDTH.COM CLEC, 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
2019-07-12 909-761-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2019-07-09 909-516-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHINO CA
2019-07-08 909-788-2XXX 2000–2999Assigned TELNYX LLC 073H CLAREMONT CA
2019-06-17 909-768-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CALIMESA CA
2019-06-14 909-515-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-06-14 909-577-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-06-14 909-577-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-06-14 909-577-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-06-14 909-577-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-06-14 909-704-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2019-06-14 909-704-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2019-06-14 909-955-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RIALTO CA
2019-06-05 909-977-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2019-05-24 909-449-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MARSHALL CA
2019-05-24 909-712-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDLANDS CA
2019-05-22 909-616-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DIAMONDBAR CA
2019-05-22 909-716-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2019-05-22 909-716-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2019-05-14 909-719-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2019-05-14 909-719-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2019-05-14 909-719-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2019-05-14 909-788-8XXX 8000–8999Assigned FRACTEL, LLC 965H CLAREMONT CA
2019-05-14 909-858-8XXX 8000–8999Assigned FRACTEL, LLC 965H CHINO CA
2019-05-10 909-701-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2019-05-10 909-701-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2019-05-08 909-977-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2019-05-06 909-977-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FONTANA CA
2019-05-01 909-515-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-05-01 909-515-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-05-01 909-577-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-05-01 909-577-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-05-01 909-577-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2019-04-18 909-449-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MARSHALL CA
2019-04-16 909-288-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2019-04-16 909-761-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2019-04-10 909-701-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2019-04-10 909-704-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2019-04-02 909-712-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 REDLANDS CA
2019-03-27 909-710-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C ETIWANDA CA
2019-03-27 909-710-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C ETIWANDA CA
2019-03-26 909-516-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2019-03-26 909-516-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2019-03-26 909-602-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 REDLANDS CA
2019-03-25 909-701-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2019-03-25 909-701-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2019-03-19 909-616-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J DIAMONDBAR CA
2019-03-18 909-955-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 RIALTO CA
2019-03-18 909-977-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2019-03-18 909-977-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2019-03-15 909-288-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLAREMONT 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.