NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

16 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 951
ONVOY, LLC - CA 14
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 1
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-02-06 951-981-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LAKEVIEWNU CA
2019-02-06 951-981-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LAKEVIEWNU CA
2019-02-06 951-981-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LAKEVIEWNU CA
2019-02-05 951-467-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HEMT HMLD CA
2019-02-04 951-257-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E IDYLLWILD CA
2019-02-04 951-257-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E IDYLLWILD CA
2019-02-04 951-494-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E IDYLLWILD CA
2019-02-04 951-494-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E IDYLLWILD CA
2019-02-04 951-494-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E IDYLLWILD CA
2019-02-04 951-494-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E IDYLLWILD CA
2019-02-04 951-494-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E IDYLLWILD CA
2019-02-01 951-451-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HEMT SNJC CA
2019-02-01 951-451-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C HEMT SNJC CA
2019-02-01 951-494-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C IDYLLWILD CA
2019-02-01 951-494-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C IDYLLWILD CA
2019-01-31 951-439-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C HEMT SAGE CA
2019-01-31 951-439-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C HEMT SAGE CA
2019-01-31 951-800-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2019-01-29 951-460-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2019-01-25 951-470-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARLINGTON CA
2019-01-25 951-470-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARLINGTON CA
2019-01-17 951-450-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2019-01-17 951-450-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2019-01-17 951-451-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HEMT SNJC CA
2019-01-17 951-502-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2019-01-17 951-518-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2019-01-17 951-518-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2019-01-16 951-429-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 WOODCREST CA
2019-01-11 951-340-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D CORONA CA
2019-01-11 951-459-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D ELSINORE CA
2019-01-07 951-470-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2018-12-24 951-466-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TEMECULA CA
2018-12-24 951-477-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MURRIETA CA
2018-12-17 951-450-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D PERRIS CA
2018-12-07 951-450-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2018-12-03 951-512-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2018-12-03 951-512-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2018-12-03 951-755-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BANNING CA
2018-11-26 951-460-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2018-11-26 951-518-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2018-11-16 951-382-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TEMSCL CNY CA
2018-10-31 951-502-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2018-10-19 951-465-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2018-10-19 951-470-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARLINGTON CA
2018-10-17 951-412-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MURRIETA CA
2018-10-17 951-451-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HEMT SNJC CA
2018-10-11 951-451-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D HEMT SNJC CA
2018-10-11 951-459-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D ELSINORE CA
2018-10-11 951-518-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MORENO CA
2018-10-11 951-987-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D CORONA 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.