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
2020-09-09 909-849-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2020-09-09 909-849-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2020-09-09 909-849-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2020-09-09 909-849-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2020-09-09 909-849-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2020-09-09 909-903-9XXX 9000–9999Assigned TWILIO INTERNATIONAL, INC. 506J CHINO CA
2020-09-04 909-740-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ONTARIO CA
2020-09-04 909-817-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-09-04 909-826-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-09-04 909-826-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-09-04 909-826-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-09-04 909-826-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-09-04 909-826-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-09-02 909-935-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2020-09-02 909-935-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2020-08-27 909-834-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HIGHLAND CA
2020-08-27 909-846-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-08-27 909-846-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-08-27 909-846-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-08-27 909-846-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-08-25 909-566-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIALTO CA
2020-08-21 909-845-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CALIMESA CA
2020-08-19 909-836-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 REDLANDS CA
2020-08-12 909-808-0XXX 0000–0999Assigned AIRESPRING, INC. 996H FONTANA CA
2020-08-11 909-563-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ONTARIO CA
2020-08-11 909-808-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2020-08-11 909-808-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2020-08-11 909-834-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HIGHLAND CA
2020-08-11 909-836-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2020-08-11 909-836-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2020-08-11 909-836-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2020-08-11 909-955-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 RIALTO CA
2020-08-06 909-826-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-08-06 909-826-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-08-06 909-826-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-08-06 909-826-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-08-06 909-826-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-08-05 909-588-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MENTONE CA
2020-08-05 909-588-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MENTONE CA
2020-08-05 909-817-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POMONA CA
2020-08-05 909-817-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POMONA CA
2020-08-05 909-817-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POMONA CA
2020-08-04 909-672-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HIGHLAND CA
2020-08-04 909-672-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HIGHLAND CA
2020-08-03 909-588-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MENTONE CA
2020-08-03 909-791-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-08-03 909-791-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-08-03 909-791-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-08-03 909-817-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-08-03 909-817-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA 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.