Area Code +1-509-(5820000...5829999) located in Kennewick, Washington (WA), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 509 Subscriber Number From : 5820000 Subscriber Number To : 5829999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : FRONTIER COM NW - WA Click here to buy United States Area Code Database Other Information Language Code : en (English) Country Number : 840 (United States) Country Code : US (United States) Region Code : WA Region Name : Washington City : Kennewick Timezone : America/Los_Angeles Coordinated Universal Time : -08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 46.2100 Longitude : -119.1400 ‹ previous : +1-509-(5810000...5819999) next › : +1-509-(5840000...5840999) Dialling Instructions For trunk calls: 0 509 5820000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 509 5820000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5820000 ~ 5829999 (Count: 10,000) Example: +1-509-5820000 / 0111-509-5820000 (1509-5820000 / 1-509-5820000) +1-509-5820001 / 0111-509-5820001 (1509-5820001 / 1-509-5820001) +1-509-5820002 / 0111-509-5820002 (1509-5820002 / 1-509-5820002) +1-509-5820003 / 0111-509-5820003 (1509-5820003 / 1-509-5820003) +1-509-5820004 / 0111-509-5820004 (1509-5820004 / 1-509-5820004) ...+1-509-xxxxxxx / 0111-509-xxxxxxx (1509-xxxxxxx / 1-509-xxxxxxx) ...+1-509-5829995 / 0111-509-5829995 (1509-5829995 / 1-509-5829995) +1-509-5829996 / 0111-509-5829996 (1509-5829996 / 1-509-5829996) +1-509-5829997 / 0111-509-5829997 (1509-5829997 / 1-509-5829997) +1-509-5829998 / 0111-509-5829998 (1509-5829998 / 1-509-5829998) +1-509-5829999 / 0111-509-5829999 (1509-5829999 / 1-509-5829999)