NumberResearch Membership · Data 09/22/2026

Recent thousands-block assignments

31 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/22/2026

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
2020-12-10 657-656-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C ANAHEIM CA
2020-12-09 657-650-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORANGE CA
2020-12-09 657-650-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORANGE CA
2020-12-09 657-650-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORANGE CA
2020-12-09 657-650-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORANGE CA
2020-12-09 657-650-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORANGE CA
2020-12-08 657-842-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ANAHEIM CA
2020-12-08 657-842-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ANAHEIM CA
2020-12-07 657-567-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-757-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-757-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-757-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-757-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-757-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-757-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-966-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-966-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-966-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-966-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-966-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-07 657-966-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-12-02 657-757-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANTA ANA CA
2020-12-02 657-757-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANTA ANA CA
2020-11-19 657-724-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-724-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-724-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-724-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-724-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-724-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-724-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-724-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-842-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-19 657-842-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-11-17 657-688-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K PLACENTIA CA
2020-11-16 657-933-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ORANGE CA
2020-11-16 657-933-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ORANGE CA
2020-11-16 657-933-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ORANGE CA
2020-11-06 657-462-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-462-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-466-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2020-11-06 657-466-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2020-11-06 657-466-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.