NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

18 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2023-06-26 661-694-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BKFD NORTH CA
2023-06-26 661-694-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BKFD NORTH CA
2023-06-26 661-743-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LANCASTER CA
2023-06-26 661-743-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LANCASTER CA
2023-06-22 661-560-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WASCO CA
2023-06-22 661-743-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LANCASTER CA
2023-06-16 661-777-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEBEC CA
2023-06-12 661-653-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DELANO CA
2023-05-26 661-453-9XXX 9000–9999Assigned TELNYX LLC 073H CLFRNHTSPG CA
2023-05-25 661-245-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J LEBEC CA
2023-05-25 661-851-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J EARLIMART CA
2023-05-24 661-604-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J LANCASTER CA
2023-05-22 661-977-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SNCA SGCC CA
2023-05-19 661-560-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WASCO CA
2023-05-19 661-760-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BUTTONWLLW CA
2023-05-19 661-770-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J TAFT CA
2023-05-16 661-612-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BKFD MAIN CA
2023-05-09 661-570-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD SOUTH CA
2023-05-09 661-570-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD SOUTH CA
2023-05-09 661-602-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD SOUTH CA
2023-05-09 661-602-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD SOUTH CA
2023-05-05 661-360-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SNCA SGCC CA
2023-05-04 661-651-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNCA NHCS CA
2023-05-04 661-651-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNCA NHCS CA
2023-05-04 661-651-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNCA NHCS CA
2023-05-04 661-651-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNCA NHCS CA
2023-05-03 661-719-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-05-03 661-719-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-04-19 661-694-1XXX 1000–1999Assigned NUSO, LLC 732J BKFD NORTH CA
2023-04-13 661-653-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DELANO CA
2023-04-13 661-653-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DELANO CA
2023-04-12 661-605-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L BKFD MAIN CA
2023-04-12 661-608-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HI VISTA CA
2023-04-12 661-608-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H HI VISTA CA
2023-04-12 661-730-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H PLDL AGDL CA
2023-04-12 661-730-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H PLDL AGDL CA
2023-03-31 661-694-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BKFD NORTH CA
2023-03-16 661-539-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCFARLAND CA
2023-03-15 661-621-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SNCA SGCC CA
2023-03-10 661-603-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-03-10 661-603-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA
2023-03-10 661-603-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLDL PLDL CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.