Area Code +359-71-(170000...179999) located in Gradec, Sofia (23), more detail is as below. Place International Dialing Code : 359 International Prefix : 00 National Prefix : 0 National Destination Code : 71 Subscriber Number From : 170000 Subscriber Number To : 179999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 8 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : BTC Click here to buy Bulgaria Area Code Database Other Information Language Code : bg (Bulgarian) Country Number : 100 (Bulgaria) Country Code : BG (Bulgaria) Region Code : 23 Region Name : Sofia City : Gradec Timezone : Europe/Sofia Coordinated Universal Time : +02:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 8 Latitude : 42.8800 Longitude : 23.2000 ‹ previous : +359-71-(160000...169999) next › : +359-71-(180000...189999) Dialling Instructions For trunk calls: 0 71 170000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 359 71 170000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 170000 ~ 179999 (Count: 10,000) Example: +359-71-170000 / 00359-71-170000 (071-170000 / 0-71-170000) +359-71-170001 / 00359-71-170001 (071-170001 / 0-71-170001) +359-71-170002 / 00359-71-170002 (071-170002 / 0-71-170002) +359-71-170003 / 00359-71-170003 (071-170003 / 0-71-170003) +359-71-170004 / 00359-71-170004 (071-170004 / 0-71-170004) ...+359-71-xxxxxx / 00359-71-xxxxxx (071-xxxxxx / 0-71-xxxxxx) ...+359-71-179995 / 00359-71-179995 (071-179995 / 0-71-179995) +359-71-179996 / 00359-71-179996 (071-179996 / 0-71-179996) +359-71-179997 / 00359-71-179997 (071-179997 / 0-71-179997) +359-71-179998 / 00359-71-179998 (071-179998 / 0-71-179998) +359-71-179999 / 00359-71-179999 (071-179999 / 0-71-179999)