Area Code +1-440-(5100000...5100999) located in Willoughby, Ohio (OH), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 440 Subscriber Number From : 5100000 Subscriber Number To : 5100999 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 : ALLEGIANCE TELCOM OH 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 : OH Region Name : Ohio City : Willoughby Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.6400 Longitude : -81.4100 ‹ previous : +1-440-(5099000...5099999) next › : +1-440-(5101000...5101999) Dialling Instructions For trunk calls: 0 440 5100000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 440 5100000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5100000 ~ 5100999 (Count: 1,000) Example: +1-440-5100000 / 0111-440-5100000 (1440-5100000 / 1-440-5100000) +1-440-5100001 / 0111-440-5100001 (1440-5100001 / 1-440-5100001) +1-440-5100002 / 0111-440-5100002 (1440-5100002 / 1-440-5100002) +1-440-5100003 / 0111-440-5100003 (1440-5100003 / 1-440-5100003) +1-440-5100004 / 0111-440-5100004 (1440-5100004 / 1-440-5100004) ...+1-440-xxxxxxx / 0111-440-xxxxxxx (1440-xxxxxxx / 1-440-xxxxxxx) ...+1-440-5100995 / 0111-440-5100995 (1440-5100995 / 1-440-5100995) +1-440-5100996 / 0111-440-5100996 (1440-5100996 / 1-440-5100996) +1-440-5100997 / 0111-440-5100997 (1440-5100997 / 1-440-5100997) +1-440-5100998 / 0111-440-5100998 (1440-5100998 / 1-440-5100998) +1-440-5100999 / 0111-440-5100999 (1440-5100999 / 1-440-5100999)