NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 847-387

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 847-387 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 847 blocks

Most active assignees, all time — NPA 847
T-MOBILE USA, INC. 4
TELEPORT COMMUNICATIONS AMERICA, LLC - IL 1
PAETEC ITEL, LLC 1
ONVOY SPECTRUM, LLC 1
LEVEL 3 COMMUNICATIONS, LLC - IL 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
2005-05-26 847-387-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
— 847-387-1XXX 1000–1999Reserved TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 BARRINGTON IL
2005-06-10 847-387-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
— 847-387-3XXX 3000–3999Reserved COMCAST IP PHONE, LLC 318J BARRINGTON IL
2005-04-05 847-387-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C BARRINGTON IL
2021-10-27 847-387-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H BARRINGTON IL
2005-04-08 847-387-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BARRINGTON IL
2005-06-23 847-387-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
2005-05-23 847-387-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BARRINGTON IL
2005-06-23 847-387-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL

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.