it states that it is a non working number

Got several calls from 414-455-1174 and 414-455-5422 and blak voice mails. When I tried calling back on these numbers, it states it is a non working number.

I just received a call from this number today at 10:19am.  I googled it and found this website.  I tried to call from a 262 land line and the number isn't recognized as a 414 #.  I then call from my cell and it advised it is no longer working.
 Be advised there is a scam going on from numbers where they tell you to hit "#" and then some numbers to upgrade your cell service.  If done, they just hacked access to your service for whatever they want.  Don't listen to them.

From phoneinfosite.com:

Area Code 414
Area code 414 is in Wisconsin (Milwaukee and nearby suburbs).


Exchange 414-455
Exchange 455 is in or around Milwaukee, WI. (Milwaukee County, Zipcode 53202)

From whitepages.com:

(414) 455-1174   Type: Land Line
Provider: MCImetro, Ats
Location: Milwaukee, WI - N. Milwaukee St., Rt.18, between E. Kilbourn Ave. and E.Wells St.