Area Code 810-425 located in PORT SANILAC, SANILAC, MI, more detail is as below. Place NPA (Numbering Plan Area) : 810 NXX (Local Number Prefix) : 425 City : PORT SANILAC County : SANILAC State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2002-05-01 FIPS (Federal Information Processing Standards) : 26151 LATA (Local Access Transport Area) : 340 Rate Center : PT SANILAC ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 48469 Other Information NPANXX : 810425 Switch CLLI (Common Language Location Identifier) : SFLDMIBVDS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : TELEPORT COMMUNICATIONS AMERICA, LLC - MI OCN (Operating Company Number) : 770E Coverage Area Name : PORT SANILAC Latitude : 43.4323 Longitude : -82.5453 ‹ previous : 810-424 next › : 810-426 Telephone Number List 810-425-0000 ~ 810-425-9999