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
2023-09-12 661-751-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD SOUTH CA
2023-09-12 661-751-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD SOUTH CA
2023-08-29 661-614-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEHACHAPI CA
2023-08-25 661-651-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNCA NHCS CA
2023-08-24 661-610-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD MAIN CA
2023-08-24 661-612-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD MAIN CA
2023-08-24 661-612-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD MAIN CA
2023-08-17 661-795-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLDL PLDL CA
2023-08-17 661-795-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLDL PLDL CA
2023-08-17 661-795-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLDL PLDL CA
2023-08-17 661-795-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLDL PLDL CA
2023-08-16 661-531-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARVIN CA
2023-07-25 661-784-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-25 661-784-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-07-21 661-597-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MOJAVE CA
2023-07-18 661-612-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BKFD MAIN CA
2023-07-11 661-258-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J EDWARDS CA
2023-07-11 661-560-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C WASCO CA
2023-07-11 661-560-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C WASCO CA
2023-07-11 661-560-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C WASCO CA
2023-07-11 661-596-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-605-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BKFD MAIN CA
2023-07-11 661-653-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C DELANO CA
2023-07-11 661-653-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C DELANO CA
2023-07-05 661-743-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LANCASTER CA
2023-06-27 661-517-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNCA SGCC CA
2023-06-27 661-517-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SNCA SGCC CA
2023-06-27 661-517-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SNCA SGCC CA
2023-06-27 661-751-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BKFD SOUTH CA
2023-06-27 661-751-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BKFD SOUTH CA
2023-06-26 661-539-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C MCFARLAND CA
2023-06-26 661-651-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SNCA NHCS CA
2023-06-26 661-694-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C BKFD NORTH CA
2023-06-26 661-694-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BKFD NORTH 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.