Area Code +1-301-(3688000...3688999) located in Damascus 236, Maryland (MD), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 301 Subscriber Number From : 3688000 Subscriber Number To : 3688999 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 : VERIZON MARYLAND INC 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 : MD Region Name : Maryland City : Damascus 236 Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.2900 Longitude : -77.2100 ‹ previous : +1-301-(3687000...3687999) next › : +1-301-(3689000...3689999) Dialling Instructions For trunk calls: 0 301 3688000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3688000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3688000 ~ 3688999 (Count: 1,000) Example: +1-301-3688000 / 0111-301-3688000 (1301-3688000 / 1-301-3688000) +1-301-3688001 / 0111-301-3688001 (1301-3688001 / 1-301-3688001) +1-301-3688002 / 0111-301-3688002 (1301-3688002 / 1-301-3688002) +1-301-3688003 / 0111-301-3688003 (1301-3688003 / 1-301-3688003) +1-301-3688004 / 0111-301-3688004 (1301-3688004 / 1-301-3688004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3688995 / 0111-301-3688995 (1301-3688995 / 1-301-3688995) +1-301-3688996 / 0111-301-3688996 (1301-3688996 / 1-301-3688996) +1-301-3688997 / 0111-301-3688997 (1301-3688997 / 1-301-3688997) +1-301-3688998 / 0111-301-3688998 (1301-3688998 / 1-301-3688998) +1-301-3688999 / 0111-301-3688999 (1301-3688999 / 1-301-3688999)