Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 414 [Rate centres in NPA 414] [Dial plan for NPA 414]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
414-999 2 Milwaukee Zone 1 WI BRFDWIJZDS0  7322 LEVEL 3 TELECOM OF WISCONSIN, LP - WI 356   2016-05-13   
414-999 3 Milwaukee Zone 1 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2016-04-28   
414-999 4 Milwaukee Zone 1 WI MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356   2016-03-17   
414-999 5 Milwaukee Zone 1 WI PEWTWICI7MD  5562 METROPCS, INC. 356   2016-03-05   
414-999 6 Milwaukee Zone 1 WI PEWTWICI7MD  5562 METROPCS, INC. 356   2016-03-05   
414-999 7 Milwaukee Zone 1 WI PEWTWICI7MD  5562 METROPCS, INC. 356   2016-03-05   
414-999 8 Milwaukee Zone 1 WI PEWTWICI7MD  5562 METROPCS, INC. 356   2016-03-05   
414-999 9 Milwaukee Zone 1 WI MILWWIAUDS2  227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2015-12-26   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.