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: JCSNMS60DS0

Remotes:

Switch Switch name Switch type
BOTNMSMARS3  BOLTON  RS 
BRNDMSESRS0  BRANDON  RS 
CNTNMSMARS0  CANTON  RS 
HTBGMSMARS0  HATTIESBURG  RS 
NTCHMSMARS0  NATCHEZ  RS 
PRVSMSMARS0  PURVIS  RS 
VCBGMSMARS1  VICKSBURG  RS 
YZCYMSMARS0  YAZOO CITY  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.