NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

18 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 661
ONVOY, LLC - CA 10
TELEPORT COMMUNICATIONS AMERICA, LLC - CA 3
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 3
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
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
2021-11-23 661-385-0XXX 0000–0999Assigned TELNYX LLC 073H EDWARDS CA
2021-11-22 661-453-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C CLFRNHTSPG CA
2021-11-22 661-922-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C DELANO CA
2021-11-22 661-922-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C DELANO CA
2021-11-17 661-512-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PLDL AGDL CA
2021-11-16 661-242-5XXX 5000–5999Assigned TELNYX LLC 073H LEBEC CA
2021-11-16 661-413-7XXX 7000–7999Assigned TELNYX LLC 073H CUYAMA CA
2021-11-16 661-634-8XXX 8000–8999Assigned TELNYX LLC 073H BKFD MAIN CA
2021-11-15 661-936-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PLDL PLDL CA
2021-11-15 661-936-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PLDL PLDL CA
2021-11-15 661-936-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PLDL PLDL CA
2021-11-12 661-539-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H MCFARLAND CA
2021-11-12 661-560-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H WASCO CA
2021-11-12 661-581-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 PLDL PLDL CA
2021-11-10 661-231-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H LEBEC CA
2021-11-10 661-235-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ROSAMOND CA
2021-11-10 661-237-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SHAFTER CA
2021-11-10 661-344-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H EARLIMART CA
2021-11-10 661-518-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H TEHACHAPI CA
2021-11-10 661-531-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H ARVIN CA
2021-11-10 661-577-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H TAFT CA
2021-11-10 661-788-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H BKFD SOUTH CA
2021-11-10 661-922-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H DELANO CA
2021-11-10 661-933-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H BKFD NORTH CA
2021-10-28 661-531-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-10-28 661-531-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-10-28 661-531-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-10-28 661-688-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2021-10-28 661-800-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2021-10-28 661-852-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2021-10-28 661-866-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2021-10-27 661-519-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-10-27 661-519-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-10-27 661-519-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-10-26 661-624-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BKFD SOUTH CA
2021-10-26 661-624-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BKFD SOUTH CA
2021-10-26 661-624-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BKFD SOUTH CA
2021-10-26 661-788-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BKFD SOUTH CA
2021-10-26 661-788-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BKFD SOUTH CA
2021-10-22 661-732-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C DELANO CA
2021-10-20 661-773-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C WALKERBSIN CA
2021-10-20 661-773-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C WALKERBSIN CA
2021-10-19 661-320-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LEBEC CA
2021-10-19 661-320-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LEBEC CA
2021-10-19 661-386-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ROSAMOND CA
2021-10-19 661-386-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ROSAMOND CA
2021-10-19 661-514-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C MCFARLAND CA
2021-10-19 661-514-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MCFARLAND CA
2021-10-19 661-514-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MCFARLAND CA
2021-10-19 661-627-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SNCA NHCS 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.