Area Code +1-301-(3131000...3131999) located in Berwyn, 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 : 3131000 Subscriber Number To : 3131999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : X (X) 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 : Berwyn Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.9900 Longitude : -76.9100 ‹ previous : +1-301-(3130000...3130999) next › : +1-301-(3132000...3132999) Dialling Instructions For trunk calls: 0 301 3131000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3131000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3131000 ~ 3131999 (Count: 1,000) Example: +1-301-3131000 / 0111-301-3131000 (1301-3131000 / 1-301-3131000) +1-301-3131001 / 0111-301-3131001 (1301-3131001 / 1-301-3131001) +1-301-3131002 / 0111-301-3131002 (1301-3131002 / 1-301-3131002) +1-301-3131003 / 0111-301-3131003 (1301-3131003 / 1-301-3131003) +1-301-3131004 / 0111-301-3131004 (1301-3131004 / 1-301-3131004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3131995 / 0111-301-3131995 (1301-3131995 / 1-301-3131995) +1-301-3131996 / 0111-301-3131996 (1301-3131996 / 1-301-3131996) +1-301-3131997 / 0111-301-3131997 (1301-3131997 / 1-301-3131997) +1-301-3131998 / 0111-301-3131998 (1301-3131998 / 1-301-3131998) +1-301-3131999 / 0111-301-3131999 (1301-3131999 / 1-301-3131999)