Area Code 418-312 located in SAINT CATHARINES THOROLD, , QC, more detail is as below. Place NPA (Numbering Plan Area) : 418 NXX (Local Number Prefix) : 312 City : SAINT CATHARINES THOROLD State : QC (Quebec) NXX Use Type : Landline NXX Intro Version : 2005-03-27 LATA (Local Access Transport Area) : 850 ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. Other Information NPANXX : 418312 County Population : 0 Coverage Area Name : SAINT CATHARINES THOROLD Latitude : 48.5349 Longitude : -71.0893 ‹ previous : 418-309 next › : 418-314 Telephone Number List 418-312-0000 ~ 418-312-9999