NumberResearchThousands-blocks in 407-573
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
The ten 1,000-number thousand-blocks inside prefix 407-573 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 407-573-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | WINTERGRDN | FL |
| — | 407-573-1XXX | 1000–1999 | Reserved | PAETEC ITEL, LLC | 829J | WINTERGRDN | FL |
| — | 407-573-2XXX | 2000–2999 | Reserved | PAETEC ITEL, LLC | 829J | WINTERGRDN | FL |
| — | 407-573-3XXX | 3000–3999 | Reserved | PAETEC ITEL, LLC | 829J | WINTERGRDN | FL |
| — | 407-573-4XXX | 4000–4999 | Reserved | PAETEC ITEL, LLC | 829J | WINTERGRDN | FL |
| 2018-08-02 | 407-573-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF FLORIDA, LLC - FL | 902E | WINTERGRDN | FL |
| 2015-07-23 | 407-573-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | WINTERGRDN | FL |
| 2016-03-16 | 407-573-7XXX | 7000–7999 | Assigned | ONVOY, LLC - FL | 937C | WINTERGRDN | FL |
| 2016-03-16 | 407-573-8XXX | 8000–8999 | Assigned | ONVOY, LLC - FL | 937C | WINTERGRDN | FL |
| 2024-05-08 | 407-573-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WINTERGRDN | FL |
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.