Area Code +1-240-(6121000...6121999) located in Capitol Heights, Maryland (MD), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 240 Subscriber Number From : 6121000 Subscriber Number To : 6121999 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 : Capitol Heights Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.8800 Longitude : -76.9200 ‹ previous : +1-240-(6120000...6120999) next › : +1-240-(6122000...6122999) Dialling Instructions For trunk calls: 0 240 6121000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 6121000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6121000 ~ 6121999 (Count: 1,000) Example: +1-240-6121000 / 0111-240-6121000 (1240-6121000 / 1-240-6121000) +1-240-6121001 / 0111-240-6121001 (1240-6121001 / 1-240-6121001) +1-240-6121002 / 0111-240-6121002 (1240-6121002 / 1-240-6121002) +1-240-6121003 / 0111-240-6121003 (1240-6121003 / 1-240-6121003) +1-240-6121004 / 0111-240-6121004 (1240-6121004 / 1-240-6121004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-6121995 / 0111-240-6121995 (1240-6121995 / 1-240-6121995) +1-240-6121996 / 0111-240-6121996 (1240-6121996 / 1-240-6121996) +1-240-6121997 / 0111-240-6121997 (1240-6121997 / 1-240-6121997) +1-240-6121998 / 0111-240-6121998 (1240-6121998 / 1-240-6121998) +1-240-6121999 / 0111-240-6121999 (1240-6121999 / 1-240-6121999)