NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 818
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
2014-11-19 818-658-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LACRSCENTA CA
2014-11-19 818-658-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LACRSCENTA CA
2014-11-19 818-797-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LACRSCENTA CA
2014-11-18 818-650-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2014-11-18 818-650-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2014-11-18 818-650-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2014-11-17 818-938-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K RESEDA CA
2014-11-13 818-208-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2014-11-13 818-208-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2014-11-13 818-208-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2014-11-13 818-210-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J NO HOLLYWD CA
2014-10-31 818-210-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K NO HOLLYWD CA
2014-10-30 818-208-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K VAN NUYS CA
2014-10-30 818-617-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K SNFN SNFN CA
2014-10-24 818-210-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C NO HOLLYWD CA
2014-10-24 818-210-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C NO HOLLYWD CA
2014-10-24 818-291-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 GLENDALE CA
2014-10-24 818-960-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORTHRIDGE CA
2014-10-21 818-938-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 RESEDA CA
2014-10-16 818-966-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFN GRHL CA
2014-10-16 818-966-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFN GRHL CA
2014-10-16 818-966-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2014-10-16 818-966-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2014-10-15 818-960-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K NORTHRIDGE CA
2014-10-13 818-210-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2014-10-13 818-210-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2014-10-13 818-210-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2014-10-13 818-318-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-10-10 818-696-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GLENDALE CA
2014-10-10 818-966-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN GRHL CA
2014-10-08 818-356-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFN SNFN CA
2014-10-03 818-318-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-10-03 818-318-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-10-03 818-318-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-10-03 818-318-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-10-03 818-318-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-10-03 818-318-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-10-03 818-318-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-10-03 818-318-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-09-30 818-918-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CANOGAPARK CA
2014-09-30 818-940-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2014-09-30 818-960-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C NORTHRIDGE CA
2014-09-30 818-960-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C NORTHRIDGE CA
2014-09-25 818-960-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C NORTHRIDGE CA
2014-09-23 818-928-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PSDN LACN CA
2014-09-23 818-928-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PSDN LACN CA
2014-09-15 818-446-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SUNLD TJNG CA
2014-09-15 818-722-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNFN SPLV CA
2014-09-15 818-722-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SNFN SPLV CA
2014-09-15 818-875-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SUNLD TJNG 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.