Area Code +359-81-(310000...319999) located in Borisovo, Ruse (18), more detail is as below. Place International Dialing Code : 359 International Prefix : 00 National Prefix : 0 National Destination Code : 81 Subscriber Number From : 310000 Subscriber Number To : 319999 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 : 18 Region Name : Ruse City : Borisovo Timezone : Europe/Sofia Coordinated Universal Time : +02:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 8 Latitude : None Longitude : None ‹ previous : +359-81-(290000...299999) next › : +359-81-(320000...329999) Dialling Instructions For trunk calls: 0 81 310000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 359 81 310000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 310000 ~ 319999 (Count: 10,000) Example: +359-81-310000 / 00359-81-310000 (081-310000 / 0-81-310000) +359-81-310001 / 00359-81-310001 (081-310001 / 0-81-310001) +359-81-310002 / 00359-81-310002 (081-310002 / 0-81-310002) +359-81-310003 / 00359-81-310003 (081-310003 / 0-81-310003) +359-81-310004 / 00359-81-310004 (081-310004 / 0-81-310004) ...+359-81-xxxxxx / 00359-81-xxxxxx (081-xxxxxx / 0-81-xxxxxx) ...+359-81-319995 / 00359-81-319995 (081-319995 / 0-81-319995) +359-81-319996 / 00359-81-319996 (081-319996 / 0-81-319996) +359-81-319997 / 00359-81-319997 (081-319997 / 0-81-319997) +359-81-319998 / 00359-81-319998 (081-319998 / 0-81-319998) +359-81-319999 / 00359-81-319999 (081-319999 / 0-81-319999)