NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 817-369

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 817-369 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 817 blocks

Most active assignees, all time — NPA 817
GRANDE COMMUNICATIONS NETWORKS, INC. - TX 5
ONVOY, LLC - TX 2
BANDWIDTH.COM CLEC, LLC - TX 2
FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 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
— 817-369-0XXX 0000–0999Reserved GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 NRICHLDHLS TX
— 817-369-1XXX 1000–1999Reserved GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 NRICHLDHLS TX
— 817-369-2XXX 2000–2999Reserved GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 NRICHLDHLS TX
2010-05-28 817-369-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C NRICHLDHLS TX
2011-01-31 817-369-4XXX 4000–4999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 0701 NRICHLDHLS TX
2014-03-13 817-369-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F NRICHLDHLS TX
— 817-369-6XXX 6000–6999Reserved GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 NRICHLDHLS TX
— 817-369-7XXX 7000–7999Reserved GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 NRICHLDHLS TX
2015-08-10 817-369-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F NRICHLDHLS TX
2010-10-26 817-369-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C NRICHLDHLS TX

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.