Prefix 414-401 — Milwaukee Zone 1, WI

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

Area code
414
Prefix (NXX)
401
Rate center
Milwaukee Zone 1
State
Wisconsin
Time zone
Central
Code holder
NEW CINGULAR WIRELESS PCS, LLC - IL
OCN
6534
Pooled
Yes (thousands-block pooling)
Assigned
2024-07-08
LATA
356

Numbers in the 414-401 prefix are registered to the Milwaukee Zone 1 rate center in WI, inside area code 414. The prefix is the second block of a ten-digit US number (414-401-XXXX) and pins the number to a billing locality.

NANPA's central-office code records list NEW CINGULAR WIRELESS PCS, LLC - IL (OCN 6534) as the code holder, assigned July 8, 2024. Because 414-401 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

The rate center lies in the Milwaukee-Waukesha, WI Metropolitan Statistical Area. The serving LATA is 356. Local time follows the Central zone.

Spoofing means this prefix on your screen doesn't guarantee a Milwaukee Zone 1 caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

Prefixes adjacent to 414-401
PrefixRate centerCode holder
414-398 Milwaukee Zone 1 ONVOY, LLC - WI
414-399 Milwaukee Zone 1 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI
414-400 Milwaukee Zone 1 ONVOY, LLC - WI
414-402 Milwaukee Zone 1 SPOK, INC.
414-403 Milwaukee Zone 1 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI
414-404 Milwaukee Zone 1 PEERLESS NETWORK OF WISCONSIN, LLC - WI

FAQ

Where is 414-401 located?

The prefix is assigned to the Milwaukee Zone 1 rate center in WI, area code 414. It is part of the Milwaukee-Waukesha, WI Metropolitan Statistical Area.

Which company owns 414-401 numbers?

NEW CINGULAR WIRELESS PCS, LLC - IL 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 414-401 safe to answer?

The prefix itself says nothing about the caller. Legitimate Milwaukee Zone 1 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.