NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 918-571

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 918-571 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 918 blocks

Most active assignees, all time — NPA 918
NEW CINGULAR WIRELESS PCS, LLC - IL 5
ONVOY, LLC - OK 2
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 1
BANDWIDTH.COM CLEC, LLC - OK 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
2018-05-14 918-571-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SALLISAW OK
2026-08-17 918-571-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALLISAW OK
2005-07-13 918-571-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALLISAW OK
2006-01-25 918-571-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALLISAW OK
2011-11-28 918-571-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 SALLISAW OK
2016-09-19 918-571-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F SALLISAW OK
2016-07-29 918-571-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALLISAW OK
2016-09-19 918-571-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F SALLISAW OK
2003-09-11 918-571-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALLISAW OK
2020-01-24 918-571-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F SALLISAW OK

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.