NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 219-951

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 219-951 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 219 blocks

Most active assignees, all time — NPA 219
T-MOBILE USA, INC. 7
LEVEL 3 COMMUNICATIONS, LLC - IN 1
FIRST COMMUNICATIONS, LLC 1
COMCAST IP PHONE, LLC 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
2005-04-15 219-951-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J GARY IN
2005-09-01 219-951-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GARY IN
2005-10-17 219-951-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GARY IN
2006-04-25 219-951-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K GARY IN
— 219-951-4XXX 4000–4999Reserved LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2004-12-16 219-951-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GARY IN
2005-05-02 219-951-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GARY IN
2005-03-11 219-951-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY IN
2005-03-01 219-951-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GARY IN
2005-02-15 219-951-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARY IN

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.