NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 415-852

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 415-852 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 415 blocks

Most active assignees, all time — NPA 415
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 4
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 2
ONVOY, LLC - CA 2
PAETEC ITEL, LLC 1
LEVEL 3 TELECOM OF CALIFORNIA, LP - 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
2011-02-10 415-852-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2011-02-10 415-852-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2011-02-10 415-852-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2011-02-24 415-852-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNFC CNTRL CA
2011-02-16 415-852-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNFC CNTRL CA
2011-02-16 415-852-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNFC CNTRL CA
2011-04-04 415-852-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J SNFC CNTRL CA
2011-03-30 415-852-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 SNFC CNTRL CA
2011-04-06 415-852-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2011-03-25 415-852-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SNFC CNTRL 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.