Area Code +1-202-(3700000...3700999) located in Washington, District of Columbia (DC), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 202 Subscriber Number From : 3700000 Subscriber Number To : 3700999 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 : TW TELECOM OF DC 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 : DC Region Name : District of Columbia City : Washington Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.9000 Longitude : -77.0300 ‹ previous : +1-202-(3690000...3699999) next › : +1-202-(3701000...3701999) Dialling Instructions For trunk calls: 0 202 3700000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 202 3700000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3700000 ~ 3700999 (Count: 1,000) Example: +1-202-3700000 / 0111-202-3700000 (1202-3700000 / 1-202-3700000) +1-202-3700001 / 0111-202-3700001 (1202-3700001 / 1-202-3700001) +1-202-3700002 / 0111-202-3700002 (1202-3700002 / 1-202-3700002) +1-202-3700003 / 0111-202-3700003 (1202-3700003 / 1-202-3700003) +1-202-3700004 / 0111-202-3700004 (1202-3700004 / 1-202-3700004) ...+1-202-xxxxxxx / 0111-202-xxxxxxx (1202-xxxxxxx / 1-202-xxxxxxx) ...+1-202-3700995 / 0111-202-3700995 (1202-3700995 / 1-202-3700995) +1-202-3700996 / 0111-202-3700996 (1202-3700996 / 1-202-3700996) +1-202-3700997 / 0111-202-3700997 (1202-3700997 / 1-202-3700997) +1-202-3700998 / 0111-202-3700998 (1202-3700998 / 1-202-3700998) +1-202-3700999 / 0111-202-3700999 (1202-3700999 / 1-202-3700999)