Prefix 414-243 — Milwaukee Zone 1, WI
- Area code
- 414
- Prefix (NXX)
- 243
- Rate center
- Milwaukee Zone 1
- State
- Wisconsin
- Time zone
- Central
- Code holder
- T-MOBILE USA, INC.
- OCN
- 6529
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2003-01-22
- LATA
- 356
Numbers in the 414-243 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 (414-243-XXXX) and pins the number to a billing locality.
The assigned code holder is T-MOBILE USA, INC., operating company number 6529, assigned January 22, 2003. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.
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
| Prefix | Rate center | Code holder |
|---|---|---|
| 414-240 | Milwaukee Zone 1 | ONVOY, LLC - WI |
| 414-241 | Milwaukee Zone 5 | T-MOBILE USA, INC. |
| 414-242 | Milwaukee Zone 1 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI |
| 414-244 | Milwaukee Zone 1 | WISCONSIN BELL INC |
| 414-245 | Milwaukee Zone 1 | WISCONSIN BELL INC |
| 414-246 | Milwaukee Zone 3 | ONVOY, LLC - WI |
FAQ
Where is 414-243 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 414-243 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 414-243 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.