NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 860-863

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 860-863 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 860 blocks

Most active assignees, all time — NPA 860
NEW CINGULAR WIRELESS PCS, LLC - DC 4
LEVEL 3 COMMUNICATIONS, LLC - CT 3
METROPCS, INC. 1
COMCAST IP PHONE, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 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
2005-01-06 860-863-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 SOUTHINGTN CT
2016-08-18 860-863-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOUTHINGTN CT
— 860-863-2XXX 2000–2999Reserved LEVEL 3 COMMUNICATIONS, LLC - CT 4800 SOUTHINGTN CT
2021-09-16 860-863-3XXX 3000–3999Assigned METROPCS, INC. 5562 SOUTHINGTN CT
2003-07-21 860-863-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 SOUTHINGTN CT
2009-05-22 860-863-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SOUTHINGTN CT
2016-06-17 860-863-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOUTHINGTN CT
2016-01-29 860-863-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOUTHINGTN CT
2015-09-18 860-863-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOUTHINGTN CT
2025-11-10 860-863-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 SOUTHINGTN CT

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.