NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 661-215

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026

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

The ten 1,000-number thousand-blocks inside prefix 661-215 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 661 blocks

Most active assignees, all time — NPA 661
ONVOY, LLC - CA 6
LEVEL 3 COMMUNICATIONS, LLC - CA 2
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 1
METROPCS, INC. 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
— 661-215-0XXX 0000–0999Reserved ONVOY, LLC - CA 649C BKFD NORTH CA
— 661-215-1XXX 1000–1999Reserved ONVOY, LLC - CA 649C BKFD NORTH CA
— 661-215-2XXX 2000–2999Reserved ONVOY, LLC - CA 649C BKFD NORTH CA
2005-02-11 661-215-3XXX 3000–3999Assigned METROPCS, INC. 5562 BKFD NORTH CA
— 661-215-4XXX 4000–4999Reserved LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BKFD NORTH CA
— 661-215-5XXX 5000–5999Reserved ONVOY, LLC - CA 649C BKFD NORTH CA
— 661-215-6XXX 6000–6999Reserved ONVOY, LLC - CA 649C BKFD NORTH CA
— 661-215-7XXX 7000–7999Reserved LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BKFD NORTH CA
2019-12-19 661-215-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BKFD NORTH CA
2020-10-15 661-215-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BKFD NORTH CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.