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.
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Switch: SFLDMIWKDS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
734-592 A New Boston MI 4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-592 0 New Boston MI 4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-592 1 New Boston MI 4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-592 2 New Boston MI 4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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