NumberResearchThousands-blocks in 224-353
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
The ten 1,000-number thousand-blocks inside prefix 224-353 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 224 blocks
Most active assignees, all time — NPA 224
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-01-28 | 224-353-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | ROSELLE | IL |
| 2009-08-03 | 224-353-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | ROSELLE | IL |
| 2006-07-06 | 224-353-2XXX | 2000–2999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROSELLE | IL |
| 2007-07-05 | 224-353-3XXX | 3000–3999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | ROSELLE | IL |
| 2008-03-06 | 224-353-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ROSELLE | IL |
| 2008-05-19 | 224-353-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROSELLE | IL |
| 2008-06-10 | 224-353-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | ROSELLE | IL |
| 2026-07-24 | 224-353-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | ROSELLE | IL |
| 2026-02-02 | 224-353-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | ROSELLE | IL |
| 2026-02-02 | 224-353-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | ROSELLE | IL |
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.