Prefix 305-363 — Keys, FL
305-363 identifies a block of numbers in Keys, FL, within the 305 area code. Every US prefix is tied to exactly one rate center; this one is Keys.
The rate center lies in the Miami-Fort Lauderdale-Pompano-West Palm Beach, FL Metropolitan Statistical Area. The serving LATA is 460. Local time follows the Eastern zone.
Treat the on-screen number as a hint, not evidence — 305-363 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.
NANPA's central-office code records list LEVEL 3 COMMUNICATIONS, LLC - FL (OCN 4802) as the code holder, assigned March 18, 2015. Because 305-363 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 305-360 | Keys | OMNIPOINT MIAMI E LICENSE, LLC |
| 305-361 | Miami | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL |
| 305-362 | Miami | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL |
| 305-364 | Miami | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL |
| 305-365 | Miami | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL |
| 305-366 | Miami | SPOK, INC. |
FAQ
Where is 305-363 located?
The prefix is assigned to the Keys rate center in FL, area code 305. It is part of the Miami-Fort Lauderdale-Pompano-West Palm Beach, FL Metropolitan Statistical Area.
Which company owns 305-363 numbers?
LEVEL 3 COMMUNICATIONS, LLC - FL holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.
Is a call from 305-363 safe to answer?
The prefix itself says nothing about the caller. Legitimate Keys businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.