Prefix 414-301 — Milwaukee Zone 5, WI

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

Area code
414
Prefix (NXX)
301
Rate center
Milwaukee Zone 5
State
Wisconsin
Time zone
Central
Code holder
LEVEL 3 COMMUNICATIONS, LLC - WI
OCN
5489
Pooled
Yes (thousands-block pooling)
Assigned
2005-12-08
LATA
356

The 414-301 prefix belongs to area code 414 and is anchored to the Milwaukee Zone 5 rate center (WI). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Milwaukee Zone 5 is part of the (Milwaukee-Waukesha, WI Metropolitan Statistical Area). For routing purposes it sits in LATA 356. Numbers here keep Central time.

The assigned code holder is LEVEL 3 COMMUNICATIONS, LLC - WI, operating company number 5489, assigned December 8, 2005. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

Caller ID showing 414-301 is not proof the call came from Milwaukee Zone 5: 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 414-301
PrefixRate centerCode holder
414-298 Milwaukee Zone 1 WISCONSIN BELL INC
414-299 Milwaukee Zone 1 WISCONSIN BELL INC
414-300 Milwaukee Zone 1 ONVOY SPECTRUM, LLC
414-302 Milwaukee Zone 1 WISCONSIN BELL INC
414-303 Milwaukee Zone 1 UNITED STATES CELLULAR - WI
414-304 Milwaukee Zone 5 WISCONSIN BELL INC

FAQ

Where is 414-301 located?

The prefix is assigned to the Milwaukee Zone 5 rate center in WI, area code 414. It is part of the (Milwaukee-Waukesha, WI Metropolitan Statistical Area).

Which company owns 414-301 numbers?

LEVEL 3 COMMUNICATIONS, LLC - WI 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 414-301 safe to answer?

The prefix itself says nothing about the caller. Legitimate Milwaukee Zone 5 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.