NumberResearchThousands-blocks in 904-406
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 904-406 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 904 blocks
Most active assignees, all time — NPA 904
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 904-406-0XXX | 0000–0999 | Reserved | COMCAST IP PHONE, LLC | 318J | MIDDLEBURG | FL |
| 2004-02-13 | 904-406-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | MIDDLEBURG | FL |
| 2002-12-26 | 904-406-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MIDDLEBURG | FL |
| 2002-11-26 | 904-406-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | MIDDLEBURG | FL |
| 2003-08-08 | 904-406-4XXX | 4000–4999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MIDDLEBURG | FL |
| 2005-03-28 | 904-406-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MIDDLEBURG | FL |
| 2008-01-16 | 904-406-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | MIDDLEBURG | FL |
| 2008-05-07 | 904-406-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | MIDDLEBURG | FL |
| 2006-01-31 | 904-406-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | MIDDLEBURG | FL |
| — | 904-406-9XXX | 9000–9999 | Reserved | COMCAST IP PHONE, LLC | 318J | MIDDLEBURG | FL |
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.