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.

Old Mission, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
231-223 A OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-223 0 OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-223 1 OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-223 2 OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-223 3 OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-223 4 OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-223 5 GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-223 7 OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-223 8 OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      
231-223 9 OLMSMIXIRS0  0720 ACE TEL. CO. OF MICHIGAN, INC. 348      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.