Area Code +1-503-(2788000...2788999) located in Portland, Oregon (OR), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 503 Subscriber Number From : 2788000 Subscriber Number To : 2788999 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 : YMAX COMMS CORP. OR 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 : OR Region Name : Oregon City : Portland Timezone : America/Los_Angeles Coordinated Universal Time : -08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 45.5200 Longitude : -122.6800 ‹ previous : +1-503-(2787000...2787999) next › : +1-503-(2789000...2789999) Dialling Instructions For trunk calls: 0 503 2788000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 503 2788000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2788000 ~ 2788999 (Count: 1,000) Example: +1-503-2788000 / 0111-503-2788000 (1503-2788000 / 1-503-2788000) +1-503-2788001 / 0111-503-2788001 (1503-2788001 / 1-503-2788001) +1-503-2788002 / 0111-503-2788002 (1503-2788002 / 1-503-2788002) +1-503-2788003 / 0111-503-2788003 (1503-2788003 / 1-503-2788003) +1-503-2788004 / 0111-503-2788004 (1503-2788004 / 1-503-2788004) ...+1-503-xxxxxxx / 0111-503-xxxxxxx (1503-xxxxxxx / 1-503-xxxxxxx) ...+1-503-2788995 / 0111-503-2788995 (1503-2788995 / 1-503-2788995) +1-503-2788996 / 0111-503-2788996 (1503-2788996 / 1-503-2788996) +1-503-2788997 / 0111-503-2788997 (1503-2788997 / 1-503-2788997) +1-503-2788998 / 0111-503-2788998 (1503-2788998 / 1-503-2788998) +1-503-2788999 / 0111-503-2788999 (1503-2788999 / 1-503-2788999)