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
2019-01-31 661-486-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PLDL AGDL CA
2019-01-25 661-271-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MOJAVE CA
2019-01-25 661-271-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MOJAVE CA
2019-01-25 661-443-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C WALKERBSIN CA
2019-01-25 661-443-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C WALKERBSIN CA
2019-01-25 661-451-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ARVIN CA
2019-01-25 661-451-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ARVIN CA
2019-01-25 661-459-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SHAFTER CA
2019-01-25 661-459-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SHAFTER CA
2019-01-25 661-465-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BERENDMESA CA
2019-01-25 661-465-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BERENDMESA CA
2019-01-25 661-475-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C EDWARDS CA
2019-01-25 661-475-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C EDWARDS CA
2019-01-25 661-498-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BKFD NORTH CA
2019-01-25 661-498-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BKFD NORTH CA
2019-01-25 661-501-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BKFD SOUTH CA
2019-01-25 661-501-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BKFD SOUTH CA
2019-01-25 661-528-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C ROSAMOND CA
2019-01-25 661-528-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ROSAMOND CA
2019-01-25 661-536-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C GLENNVILLE CA
2019-01-25 661-536-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C GLENNVILLE CA
2019-01-25 661-668-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C EARLIMART CA
2019-01-25 661-668-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C EARLIMART CA
2019-01-25 661-689-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CLFRNHTSPG CA
2019-01-25 661-689-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CLFRNHTSPG CA
2019-01-25 661-760-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BUTTONWLLW CA
2019-01-25 661-760-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BUTTONWLLW CA
2019-01-25 661-762-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MCKITTRICK CA
2019-01-25 661-762-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MCKITTRICK CA
2019-01-25 661-766-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C CUYAMA CA
2019-01-25 661-766-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CUYAMA CA
2019-01-25 661-768-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C TAFT CA
2019-01-25 661-768-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C TAFT CA
2019-01-25 661-771-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C TEHACHAPI CA
2019-01-25 661-777-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LEBEC CA
2019-01-25 661-777-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LEBEC CA
2019-01-25 661-797-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LOST HILLS CA
2019-01-25 661-797-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LOST HILLS CA
2019-01-25 661-825-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C TEHACHAPI CA
2019-01-25 661-927-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C MCFARLAND CA
2019-01-25 661-927-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MCFARLAND CA
2019-01-18 661-409-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PLDL PLDL CA
2019-01-18 661-409-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PLDL PLDL CA
2019-01-18 661-501-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BKFD SOUTH CA
2019-01-17 661-417-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SNCA NHCS CA
2019-01-17 661-888-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SNCA NHCS CA
2019-01-16 661-553-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DELANO CA
2018-12-07 661-289-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEBEC CA
2018-12-05 661-731-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F EARLIMART CA
2018-12-03 661-234-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PLDL PLDL 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.