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.

Otisville, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
810-374 A SFLDMIBVDS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
810-374 0 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2019-03-23   
810-374 1 ANARMIMNX8X  3535 ACD TELECOM, INC. - MI 340   2005-07-28   
810-374 3 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2017-05-26   
810-374 4 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-05-31   
810-374 5 ANARMIMNX8X  3535 ACD TELECOM, INC. - MI 340   2005-12-10   
810-374 6 FETPMIAU2MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 340   2007-02-25   
810-374 7 SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2012-07-09   
810-374 8 SFLDMIBV3MD  508J CENTURYLINK COMMUNICATIONS, LLC 340   2014-03-31   
810-374 9 SFLDMIBVDS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
810-617 A SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340      
810-617 2 SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340   2022-04-22   
810-617 3   624H ONVOY SPECTRUM, LLC 340   2024-03-23   
810-631 A OTVLMIXGRS0  0695 FRONTIER NORTH, INC. - MI 340      
810-631 0 SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2014-05-03   
810-631 1 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2013-03-15   
810-631 2 OTVLMIXGRS0  0695 FRONTIER NORTH, INC. - MI 340      
810-631 3 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2019-03-23   
810-631 4 OTVLMIXGRS0  0695 FRONTIER NORTH, INC. - MI 340      
810-631 5 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-03-05   
810-631 6 OTVLMIXGRS0  0695 FRONTIER NORTH, INC. - MI 340      
810-631 7   279B CLEAR RATE COMMUNICATIONS, INC. - MI 340   2010-06-12   
810-631 8 OTVLMIXGRS0  0695 FRONTIER NORTH, INC. - MI 340      
810-631 9 OTVLMIXGRS0  0695 FRONTIER NORTH, INC. - MI 340      

Last updated: Fri, 28 Jun 2024 03:14:50 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.