Prefix 414-360 — Milwaukee Zone 5, WI

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

Numbers in the 414-360 prefix are registered to the Milwaukee Zone 5 rate center in WI, inside area code 414. The prefix is the second block of a ten-digit US number (414-360-XXXX) and pins the number to a billing locality.

NANPA's central-office code records list ONVOY SPECTRUM, LLC (OCN 624H) as the code holder, assigned January 11, 2024. Because 414-360 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 5 caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

FAQ

Where is 414-360 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 414-360 numbers?

ONVOY SPECTRUM, LLC 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 414-360 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.