Prefix 305-501 — Keys, FL

NANPA CO code assignment, current as of July 28, 2026.

Area code
305
Prefix (NXX)
501
Rate center
Keys
State
Florida
Time zone
Eastern
Code holder
LEVEL 3 COMMUNICATIONS, LLC - FL
OCN
4802
Pooled
Yes (thousands-block pooling)
Assigned
2011-09-20
LATA
460

Numbers in the 305-501 prefix are registered to the Keys rate center in FL, inside area code 305. The prefix is the second block of a ten-digit US number (305-501-XXXX) and pins the number to a billing locality.

Code-holder of record: LEVEL 3 COMMUNICATIONS, LLC - FL (OCN 4802), assigned September 20, 2011. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 305-501 numbers may be served by different companies.

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.

Spoofing means this prefix on your screen doesn't guarantee a Keys caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

Prefixes adjacent to 305-501
PrefixRate centerCode holder
305-498 Miami NEW CINGULAR WIRELESS PCS, LLC - GA
305-499 Miami BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL
305-500 Miami BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL
305-502 North Dade OMNIPOINT MIAMI E LICENSE, LLC
305-503 Miami PAETEC ITEL, LLC
305-504 Keys OMNIPOINT MIAMI E LICENSE, LLC

FAQ

Where is 305-501 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 305-501 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 305-501 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.