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
2012-12-21 818-877-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2012-12-18 818-479-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J VAN NUYS CA
2012-12-04 818-797-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LACRSCENTA CA
2012-12-04 818-797-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LACRSCENTA CA
2012-12-04 818-798-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C RESEDA CA
2012-12-04 818-798-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C RESEDA CA
2012-12-04 818-856-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C NO HOLLYWD CA
2012-12-04 818-856-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C NO HOLLYWD CA
2012-12-04 818-856-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C NO HOLLYWD CA
2012-12-04 818-869-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2012-12-04 818-869-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2012-12-04 818-869-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2012-12-04 818-875-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SUNLD TJNG CA
2012-12-04 818-875-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SUNLD TJNG CA
2012-12-04 818-877-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C AGOURA CA
2012-12-04 818-900-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SNFN GRHL CA
2012-12-04 818-900-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNFN GRHL CA
2012-12-04 818-975-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RESEDA CA
2012-12-03 818-724-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFN SPLV CA
2012-12-03 818-810-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFN SPLV CA
2012-11-29 818-877-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2012-11-29 818-877-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2012-11-20 818-296-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2012-11-15 818-287-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NO HOLLYWD CA
2012-11-15 818-856-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NO HOLLYWD CA
2012-10-22 818-809-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K VAN NUYS CA
2012-10-12 818-282-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFN GRHL CA
2012-10-12 818-638-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GLENDALE CA
2012-10-03 818-483-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C AGOURA CA
2012-10-03 818-540-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C AGOURA CA
2012-10-03 818-651-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C AGOURA CA
2012-10-03 818-651-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C AGOURA CA
2012-10-03 818-651-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C AGOURA CA
2012-10-01 818-862-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LACRSCENTA CA
2012-10-01 818-862-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LACRSCENTA CA
2012-10-01 818-862-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LACRSCENTA CA
2012-10-01 818-862-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LACRSCENTA CA
2012-10-01 818-862-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LACRSCENTA CA
2012-09-27 818-856-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NO HOLLYWD CA
2012-09-27 818-856-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NO HOLLYWD CA
2012-09-21 818-743-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFN SNFN CA
2012-09-20 818-579-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NO HOLLYWD CA
2012-09-20 818-821-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NO HOLLYWD CA
2012-09-18 818-877-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C AGOURA CA
2012-09-13 818-408-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2012-09-13 818-698-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2012-09-13 818-743-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2012-09-07 818-798-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RESEDA CA
2012-09-07 818-798-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RESEDA CA
2012-09-07 818-798-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RESEDA 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.