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: 616 [Rate centres in NPA 616] [Dial plan for NPA 616]

NXX: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
616-404 A Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
616-404 0 Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2015-08-02   
616-404 1 Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2016-03-28   
616-404 2 Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2016-03-28   
616-404 3 Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-07-07   
616-404 4 Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-07-07   
616-404 5 Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
616-404 6 Casnovia MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-16   
616-404 7 Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2014-11-05   
616-404 8 Casnovia MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
616-404 9 Casnovia MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-26   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.