Level 3 (Lumen) phone numbers
Level 3 (Lumen) holds 10,346 phone prefixes in 51 states and territories.
Internet / business phone carrier Numbers in this prefix were assigned to a carrier that mainly serves internet phone services, cable phone and business lines.
What it means. Level 3 (Lumen) mainly sells internet and business phone service. Numbers like these can be rented in bulk for a low price, which is why legitimate call centers, apps and robocallers all use them. A call from this kind of prefix is not a warning by itself, but it's a reason to verify who is calling.
See why the number on your screen can be faked.
Where Level 3 (Lumen) numbers are
| State | Prefixes |
|---|---|
| California | 1,227 |
| Texas | 899 |
| Pennsylvania | 570 |
| Illinois | 524 |
| New York | 515 |
| Ohio | 505 |
| Florida | 464 |
| New Jersey | 395 |
| Massachusetts | 303 |
| Michigan | 302 |
| North Carolina | 300 |
| Georgia | 278 |
Area codes with the most Level 3 (Lumen) prefixes
484128 678120 802115 26794 83292 73287 97886 46985 90884 76078 76578 81576 97376 44374 66271 55970 61470 93769 72469 36069 44068 60167 74067 30966 51266 70865 70465 71765 57364 90364
About 96% of these prefixes are pooled (shared with other carriers in blocks). The carrier on any one number can differ if the owner switched carriers. Source: NANPA central office code records, 2026-10-10.