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: 517 [Rate centres in NPA 517] [Dial plan for NPA 517]

NXX: 529

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-529 A Clarklake MI CLRKMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-529 0 Clarklake MI CLRKMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-529 1 Clarklake MI CLRKMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-529 2 Clarklake MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-529 3 Clarklake MI CLRKMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-529 4 Clarklake MI CLRKMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-529 5 Clarklake MI CLRKMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-529 6 Clarklake MI LNNGMIDCHMD  4632 TELNET WORLDWIDE, INC. 346      
517-529 7 Clarklake MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346      
517-529 8 Clarklake MI CLRKMIMNRSA  9323 MICHIGAN BELL TEL CO 346      
517-529 9 Clarklake MI CLRKMIMNRSA  9323 MICHIGAN BELL TEL CO 346      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.