Area Code 671-878 located in AGANA HEIGHTS, GUAM, GU, more detail is as below. Place NPA (Numbering Plan Area) : 671 NXX (Local Number Prefix) : 878 City : AGANA HEIGHTS County : GUAM State : GU (None) NXX Use Type : Wireless NXX Intro Version : 2005-03-27 FIPS (Federal Information Processing Standards) : 66010 LATA (Local Access Transport Area) : 871 Rate Center : AGANA ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 96919 Other Information NPANXX : 671878 Switch CLLI (Common Language Location Identifier) : TUMNGU01CM0 Time Zone : Guam (GMT +10:00) Observes Daylight Saving Time : No Company : CHOICE PHONE LLC DBA ICONN OCN (Operating Company Number) : 1085 Coverage Area Name : AGANA HEIGHTS Latitude : 13.4630 Longitude : -144.7435 ‹ previous : 671-868 next › : 671-888 Telephone Number List 671-878-0000 ~ 671-878-9999