NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 815-771

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 815-771 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 815 blocks

Most active assignees, all time — NPA 815
ONVOY SPECTRUM, LLC 5
ONVOY, LLC 2
STRATUS NETWORKS 1
RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 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
2021-10-20 815-771-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H ASHKUM IL
2021-03-02 815-771-1XXX 1000–1999Assigned ONVOY, LLC 224C ASHKUM IL
— 815-771-2XXX 2000–2999Available ASHKUM IL
— 815-771-3XXX 3000–3999Reserved RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 ASHKUM IL
2021-06-07 815-771-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ASHKUM IL
2021-04-24 815-771-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ASHKUM IL
2021-04-24 815-771-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ASHKUM IL
2019-07-29 815-771-7XXX 7000–7999Assigned ONVOY, LLC 224C ASHKUM IL
2020-08-20 815-771-8XXX 8000–8999Assigned STRATUS NETWORKS 495J ASHKUM IL
2021-10-20 815-771-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H ASHKUM IL

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.