Area Code +1-301-(3230000...3230999) located in Laurel 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 : 3230000 Subscriber Number To : 3230999 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 MD 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 : Laurel 236 Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.1000 Longitude : -76.8500 ‹ previous : +1-301-(3220000...3229999) next › : +1-301-(3231000...3231999) Dialling Instructions For trunk calls: 0 301 3230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3230000 ~ 3230999 (Count: 1,000) Example: +1-301-3230000 / 0111-301-3230000 (1301-3230000 / 1-301-3230000) +1-301-3230001 / 0111-301-3230001 (1301-3230001 / 1-301-3230001) +1-301-3230002 / 0111-301-3230002 (1301-3230002 / 1-301-3230002) +1-301-3230003 / 0111-301-3230003 (1301-3230003 / 1-301-3230003) +1-301-3230004 / 0111-301-3230004 (1301-3230004 / 1-301-3230004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3230995 / 0111-301-3230995 (1301-3230995 / 1-301-3230995) +1-301-3230996 / 0111-301-3230996 (1301-3230996 / 1-301-3230996) +1-301-3230997 / 0111-301-3230997 (1301-3230997 / 1-301-3230997) +1-301-3230998 / 0111-301-3230998 (1301-3230998 / 1-301-3230998) +1-301-3230999 / 0111-301-3230999 (1301-3230999 / 1-301-3230999)