NumberResearch Membership · Data 09/21/2026

Thousands-blocks in 650-538

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/21/2026

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

The ten 1,000-number thousand-blocks inside prefix 650-538 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 650 blocks

Most active assignees, all time — NPA 650
ONVOY, LLC - CA 4
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 3
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
BANDWIDTH.COM CLEC, LLC - CA 1
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
2019-10-22 650-538-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PESCADERO CA
— 650-538-1XXX 1000–1999Available PESCADERO CA
2021-07-18 650-538-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2013-03-14 650-538-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PESCADERO CA
2013-03-14 650-538-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PESCADERO CA
2021-09-08 650-538-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2016-05-09 650-538-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PESCADERO CA
2018-11-29 650-538-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2018-11-29 650-538-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C PESCADERO CA
— 650-538-9XXX 9000–9999Reserved U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PESCADERO CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.