Area Code +1-410-(7720000...7729999) located in Columbia, Maryland (MD), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 410 Subscriber Number From : 7720000 Subscriber Number To : 7729999 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 : Columbia Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.2000 Longitude : -76.8600 ‹ previous : +1-410-(7710000...7719999) next › : +1-410-(7730000...7730999) Dialling Instructions For trunk calls: 0 410 7720000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 410 7720000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7720000 ~ 7729999 (Count: 10,000) Example: +1-410-7720000 / 0111-410-7720000 (1410-7720000 / 1-410-7720000) +1-410-7720001 / 0111-410-7720001 (1410-7720001 / 1-410-7720001) +1-410-7720002 / 0111-410-7720002 (1410-7720002 / 1-410-7720002) +1-410-7720003 / 0111-410-7720003 (1410-7720003 / 1-410-7720003) +1-410-7720004 / 0111-410-7720004 (1410-7720004 / 1-410-7720004) ...+1-410-xxxxxxx / 0111-410-xxxxxxx (1410-xxxxxxx / 1-410-xxxxxxx) ...+1-410-7729995 / 0111-410-7729995 (1410-7729995 / 1-410-7729995) +1-410-7729996 / 0111-410-7729996 (1410-7729996 / 1-410-7729996) +1-410-7729997 / 0111-410-7729997 (1410-7729997 / 1-410-7729997) +1-410-7729998 / 0111-410-7729998 (1410-7729998 / 1-410-7729998) +1-410-7729999 / 0111-410-7729999 (1410-7729999 / 1-410-7729999)