NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

31 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 657
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 30
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
2023-07-28 657-648-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2023-07-28 657-648-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2023-07-28 657-648-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2023-07-28 657-648-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2023-07-28 657-654-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-28 657-662-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2023-07-28 657-662-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2023-07-28 657-664-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SILVERADO CA
2023-07-25 657-672-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-672-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-25 657-673-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-673-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2023-07-25 657-674-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-25 657-674-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2023-07-21 657-621-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WESTMINSTR CA
2023-07-21 657-621-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WESTMINSTR CA
2023-07-21 657-621-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WESTMINSTR CA
2023-07-21 657-626-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLACENTIA CA
2023-07-21 657-640-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-21 657-651-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-21 657-651-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-21 657-651-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-21 657-653-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-21 657-653-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-21 657-653-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2023-07-21 657-654-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM 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.