NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2006-01-27 | 407-745 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | ORLANDO | FL |
| — | 407-209 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | ORLANDO | FL |
| — | 407-210 | not yet reported which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | ORLANDO | FL |
| — | 407-215 | not yet reported which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | WINTERPARK | FL |
| — | 407-217 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | WINDERMERE | FL |
| — | 407-386 | not yet reported which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | ORLANDO | FL |
| — | 407-395 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | WINTERGRDN | FL |
| — | 407-703 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | APOPKA | FL |
| — | 407-705 | 2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | KISSIMMEE | FL |
| — | 407-707 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | WKISSIMMEE | FL |
| — | 407-708 | 3XXX4XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | SANFORD | FL |
| — | 407-796 | 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | OVIEDO | FL |
| — | 407-902 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | ORLANDO | FL |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.