Prefix 305-397 — Miami, FL

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

Area code
305
Prefix (NXX)
397
Rate center
Miami
State
Florida
Time zone
Eastern
Code holder
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL
OCN
6502
Pooled
Yes (thousands-block pooling)
Assigned
2006-12-21
LATA
460

The 305-397 prefix belongs to area code 305 and is anchored to the Miami rate center (FL). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Miami is part of the Miami-Fort Lauderdale-Pompano-West Palm Beach, FL Metropolitan Statistical Area. For routing purposes it sits in LATA 460. Numbers here keep Eastern time.

NANPA's central-office code records list CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL (OCN 6502) as the code holder, assigned December 21, 2006. Because 305-397 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

Caller ID showing 305-397 is not proof the call came from Miami: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.

Neighboring prefixes

Prefixes adjacent to 305-397
PrefixRate centerCode holder
305-394 Keys NEW CINGULAR WIRELESS PCS, LLC - GA
305-395 Keys NEW CINGULAR WIRELESS PCS, LLC - GA
305-396 Keys MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL
305-398 Miami PAETEC ITEL, LLC
305-399 Keys OMNIPOINT MIAMI E LICENSE, LLC
305-400 Miami BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL

FAQ

Where is 305-397 located?

The prefix is assigned to the Miami 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 305-397 numbers?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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 305-397 safe to answer?

The prefix itself says nothing about the caller. Legitimate Miami businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.