NumberResearchThousands-blocks in 847-603
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 847-603 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
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 1999-03-19 | 847-603-0XXX | 0000–0999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | ANTIOCH | IL |
| — | 847-603-1XXX | 1000–1999 | Reserved | COMCAST IP PHONE, LLC | 318J | ANTIOCH | IL |
| 2014-09-18 | 847-603-2XXX | 2000–2999 | Assigned | ONVOY, LLC | 224C | ANTIOCH | IL |
| 2004-04-30 | 847-603-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ANTIOCH | IL |
| 2002-04-12 | 847-603-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ANTIOCH | IL |
| 2004-11-11 | 847-603-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ANTIOCH | IL |
| 2000-08-17 | 847-603-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ANTIOCH | IL |
| 2000-05-30 | 847-603-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ANTIOCH | IL |
| 1999-07-08 | 847-603-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ANTIOCH | IL |
| 2000-08-01 | 847-603-9XXX | 9000–9999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ANTIOCH | 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.