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LEVEL 3 TELECOM OF COLORADO, LLC - CO
Operating Company Number (OCN): 4574
Is this carrier legit?
Carriers are telecom operating companies that own number blocks (NPA-NXX). A number showing this carrier does not guarantee the caller is that company — scam calls can spoof caller ID.
Ad Unit
Optional ad placement.Number blocks (sample)
| State | NPA | NXX | Rate center | Open |
|---|---|---|---|---|
| CO | 303 | 802 | DENVER | Prefix |
| CO | 303 | 803 | DENVER | Prefix |
| CO | 720 | 278 | DENVER | Prefix |
| CO | 720 | 279 | DENVER | Prefix |
| CO | 720 | 282 | DENVER | Prefix |
| CO | 720 | 305 | DENVER | Prefix |
| CO | 720 | 347 | DENVER | Prefix |
| CO | 720 | 354 | DENVER | Prefix |
| CO | 720 | 387 | DENVER | Prefix |
| CO | 720 | 393 | DENVER | Prefix |
| CO | 720 | 456 | DENVER | Prefix |
| CO | 720 | 458 | DENVER | Prefix |
| CO | 720 | 478 | DENVER | Prefix |
| CO | 720 | 573 | DENVER | Prefix |
| CO | 720 | 593 | DENVER | Prefix |
| CO | 720 | 603 | DENVER | Prefix |
| CO | 720 | 728 | DENVER | Prefix |
| CO | 720 | 754 | DENVER | Prefix |
| CO | 720 | 990 | DENVER | Prefix |
Showing up to 2,000 blocks (cap for performance).
SEO keywords covered
carrier lookup • operating company number • ocn lookup • who owns this number • npa nxx • rate center
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