NumberResearchThousands-blocks in 407-556
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 407-556 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 407 blocks
Most active assignees, all time — NPA 407
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 407-556-0XXX | 0000–0999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | ST CLOUD | FL |
| 2019-03-13 | 407-556-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | ST CLOUD | FL |
| 2006-02-06 | 407-556-2XXX | 2000–2999 | Assigned | SMART CITY SOLUTIONS II, LLC DBA SMART CITY METRO | 8105 | ST CLOUD | FL |
| 2008-08-19 | 407-556-3XXX | 3000–3999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | ST CLOUD | FL |
| 2006-08-17 | 407-556-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | ST CLOUD | FL |
| 2006-08-17 | 407-556-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | ST CLOUD | FL |
| 2010-08-27 | 407-556-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | ST CLOUD | FL |
| 2006-08-17 | 407-556-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | ST CLOUD | FL |
| 2008-10-03 | 407-556-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | ST CLOUD | FL |
| 2020-10-21 | 407-556-9XXX | 9000–9999 | Assigned | ONVOY, LLC - FL | 937C | ST CLOUD | 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.