NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 408-913

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 408-913 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 408 blocks

Most active assignees, all time — NPA 408
NEW CINGULAR WIRELESS PCS, LLC 3
LEVEL 3 COMMUNICATIONS, LLC - CA 3
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 1
ONVOY, 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
2014-09-29 408-913-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SARATOGA CA
2014-02-27 408-913-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SARATOGA CA
2014-02-27 408-913-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SARATOGA CA
2014-09-29 408-913-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SARATOGA CA
2012-02-10 408-913-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 SARATOGA CA
2014-04-10 408-913-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SARATOGA CA
2013-03-04 408-913-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SARATOGA CA
2001-05-20 408-913-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SARATOGA CA
2012-10-12 408-913-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SARATOGA CA
2013-11-06 408-913-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SARATOGA 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.