Prefix 303-513 — Denver, CO
A phone number starting 303-513 was issued in the Denver rate center of CO — part of area code 303.
Code-holder of record: NEW CINGULAR WIRELESS PCS, LLC (OCN 6010), assigned February 15, 2002. The prefix is not pooled, so the full 10,000-number block sits with the code holder (subject to number portability).
A scammer can display 303-513 without ever touching CO. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.
Denver is part of the Denver-Aurora-Centennial, CO Metropolitan Statistical Area. For routing purposes it sits in LATA 656. Numbers here keep Mountain time.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 303-509 | Denver | AMERICAN MESSAGING SERVICES, LLC |
| 303-510 | Denver | AMERICAN MESSAGING SERVICES, LLC |
| 303-512 | Denver | QWEST CORPORATION |
| 303-514 | Denver | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-515 | Denver | ONVOY, LLC - CO |
| 303-516 | Denver | QWEST CORPORATION |
FAQ
Where is 303-513 located?
The prefix is assigned to the Denver rate center in CO, area code 303. It is part of the Denver-Aurora-Centennial, CO Metropolitan Statistical Area.
Which company owns 303-513 numbers?
NEW CINGULAR WIRELESS PCS, LLC holds the code. Individual numbers may still be ported to other providers.
Is a call from 303-513 safe to answer?
The prefix itself says nothing about the caller. Legitimate Denver businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.