Area Code +1-301-(2231000...2231999) located in Williamsport, 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 : 2231000 Subscriber Number To : 2231999 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 : Williamsport Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.6000 Longitude : -77.8200 ‹ previous : +1-301-(2230000...2230999) next › : +1-301-(2232000...2232999) Dialling Instructions For trunk calls: 0 301 2231000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2231000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2231000 ~ 2231999 (Count: 1,000) Example: +1-301-2231000 / 0111-301-2231000 (1301-2231000 / 1-301-2231000) +1-301-2231001 / 0111-301-2231001 (1301-2231001 / 1-301-2231001) +1-301-2231002 / 0111-301-2231002 (1301-2231002 / 1-301-2231002) +1-301-2231003 / 0111-301-2231003 (1301-2231003 / 1-301-2231003) +1-301-2231004 / 0111-301-2231004 (1301-2231004 / 1-301-2231004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2231995 / 0111-301-2231995 (1301-2231995 / 1-301-2231995) +1-301-2231996 / 0111-301-2231996 (1301-2231996 / 1-301-2231996) +1-301-2231997 / 0111-301-2231997 (1301-2231997 / 1-301-2231997) +1-301-2231998 / 0111-301-2231998 (1301-2231998 / 1-301-2231998) +1-301-2231999 / 0111-301-2231999 (1301-2231999 / 1-301-2231999)