Prefix 813-435 — Tampa North, FL

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

Area code
813
Prefix (NXX)
435
Rate center
Tampa North
State
Florida
Time zone
Eastern
Code holder
LEVEL 3 TELECOM OF FLORIDA, LP - FL
OCN
7635
Pooled
Yes (thousands-block pooling)
Assigned
2002-01-03
LATA
952

813-435 identifies a block of numbers in Tampa North, FL, within the 813 area code. Every US prefix is tied to exactly one rate center; this one is Tampa North.

The rate center lies in the Tampa-St. Petersburg-Clearwater, FL Metropolitan Statistical Area. The serving LATA is 952. Local time follows the Eastern zone.

Treat the on-screen number as a hint, not evidence — 813-435 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 TELECOM OF FLORIDA, LP - FL (OCN 7635) as the code holder, assigned January 3, 2002. Because 813-435 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

Neighboring prefixes

Prefixes adjacent to 813-435
PrefixRate centerCode holder
813-432 Tampa Central MCI WORLDCOM COMMUNICATIONS, INC. - FL
813-433 Tampa West LEVEL 3 TELECOM OF FLORIDA, LP - FL
813-434 Tampa South LEVEL 3 TELECOM OF FLORIDA, LP - FL
813-436 Tampa East LEVEL 3 TELECOM OF FLORIDA, LP - FL
813-437 Tampa Central LEVEL 3 COMMUNICATIONS, LLC - FL
813-438 Tampa East AERIAL COMMUNICATIONS, INC.

FAQ

Where is 813-435 located?

The prefix is assigned to the Tampa North rate center in FL, area code 813. It is part of the Tampa-St. Petersburg-Clearwater, FL Metropolitan Statistical Area.

Which company owns 813-435 numbers?

LEVEL 3 TELECOM OF FLORIDA, LP - 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 813-435 safe to answer?

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