Prefix 414-317 — Milwaukee Zone 1, WI
- Area code
- 414
- Prefix (NXX)
- 317
- Rate center
- Milwaukee Zone 1
- State
- Wisconsin
- Time zone
- Central
- Code holder
- T-MOBILE USA, INC.
- OCN
- 6529
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2022-01-20
- LATA
- 356
414-317 identifies a block of numbers in Milwaukee Zone 1, WI, within the 414 area code. Every US prefix is tied to exactly one rate center; this one is Milwaukee Zone 1.
The rate center lies in the Milwaukee-Waukesha, WI Metropolitan Statistical Area. The serving LATA is 356. Local time follows the Central zone.
Treat the on-screen number as a hint, not evidence — 414-317 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.
The assigned code holder is T-MOBILE USA, INC., operating company number 6529, assigned January 20, 2022. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 414-314 | Milwaukee Zone 1 | SPOK, INC. |
| 414-315 | Milwaukee Zone 1 | UNITED STATES CELLULAR - WI |
| 414-316 | Milwaukee Zone 1 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI |
| 414-318 | Milwaukee Zone 1 | AMERICAN MESSAGING SERVICES, LLC |
| 414-319 | Milwaukee Zone 1 | WISCONSIN BELL INC |
| 414-320 | Milwaukee Zone 1 | SPOK, INC. |
FAQ
Where is 414-317 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 414-317 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 414-317 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.