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.

Switch: DRNTOKMADS2

Remotes:

Switch Switch name Switch type
ANTLOKMARS1  ANTLERS  RSC 
BGTNOKMARS1  BENNINGTON  RLC 
BSWLOKMARS1  BOSWELL  RSC 
CADDOKMARS1  CADDO  RSC 
CLGTOKMARS1  COALGATE  RSC 
FTTWOKMARS1  FORT TOWSON  RSC 
HUGOOKMARS1  HUGO  RSC 
RTTNOKMARS1  RATTAN  RSC 
SOPROKMARS1  SOPER  RSC 
TUPLOKMARS1  TUPELO  RSC 
WPNCOKMARL1  WAPANUCKA  RLC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
580-745 A Durant OK 9533 SOUTHWESTERN BELL 536      
580-916 A Durant OK 9533 SOUTHWESTERN BELL 536      
580-920 A Durant OK 9533 SOUTHWESTERN BELL 536      
580-924 A Durant OK 9533 SOUTHWESTERN BELL 536      
580-931 A Durant OK 9533 SOUTHWESTERN BELL 536      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.