Area Code +359-81-(500000...509999) located in Semerdzhievo, 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 : 500000 Subscriber Number To : 509999 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 : Semerdzhievo Timezone : Europe/Sofia Coordinated Universal Time : +02:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 8 Latitude : 43.7700 Longitude : 26.1700 ‹ previous : +359-81-(490000...499999) next › : +359-81-(510000...519999) Dialling Instructions For trunk calls: 0 81 500000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 359 81 500000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 500000 ~ 509999 (Count: 10,000) Example: +359-81-500000 / 00359-81-500000 (081-500000 / 0-81-500000) +359-81-500001 / 00359-81-500001 (081-500001 / 0-81-500001) +359-81-500002 / 00359-81-500002 (081-500002 / 0-81-500002) +359-81-500003 / 00359-81-500003 (081-500003 / 0-81-500003) +359-81-500004 / 00359-81-500004 (081-500004 / 0-81-500004) ...+359-81-xxxxxx / 00359-81-xxxxxx (081-xxxxxx / 0-81-xxxxxx) ...+359-81-509995 / 00359-81-509995 (081-509995 / 0-81-509995) +359-81-509996 / 00359-81-509996 (081-509996 / 0-81-509996) +359-81-509997 / 00359-81-509997 (081-509997 / 0-81-509997) +359-81-509998 / 00359-81-509998 (081-509998 / 0-81-509998) +359-81-509999 / 00359-81-509999 (081-509999 / 0-81-509999)