Prefix 414-235 — Milwaukee Zone 3, WI

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

Area code
414
Prefix (NXX)
235
Rate center
Milwaukee Zone 3
State
Wisconsin
Time zone
Central
Code holder
T-MOBILE USA, INC.
OCN
6529
Pooled
Yes (thousands-block pooling)
Assigned
2002-04-02
LATA
356

The 414-235 prefix belongs to area code 414 and is anchored to the Milwaukee Zone 3 rate center (WI). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Milwaukee Zone 3 is part of the (Milwaukee-Waukesha, WI Metropolitan Statistical Area). For routing purposes it sits in LATA 356. Numbers here keep Central time.

Code-holder of record: T-MOBILE USA, INC. (OCN 6529), assigned April 2, 2002. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 414-235 numbers may be served by different companies.

Caller ID showing 414-235 is not proof the call came from Milwaukee Zone 3: 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 414-235
PrefixRate centerCode holder
414-232 Milwaukee Zone 1 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI
414-233 Milwaukee Zone 1 T-MOBILE USA, INC.
414-234 Milwaukee Zone 5 T-MOBILE USA, INC.
414-236 Milwaukee Zone 4 T-MOBILE USA, INC.
414-237 Milwaukee Zone 1 SPOK, INC.
414-238 Milwaukee Zone 1 ONVOY, LLC - WI

FAQ

Where is 414-235 located?

The prefix is assigned to the Milwaukee Zone 3 rate center in WI, area code 414. It is part of the (Milwaukee-Waukesha, WI Metropolitan Statistical Area).

Which company owns 414-235 numbers?

T-MOBILE USA, INC. 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 414-235 safe to answer?

The prefix itself says nothing about the caller. Legitimate Milwaukee Zone 3 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.