Area Code +359-81-(510000...519999) located in Prosena, 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 : 510000 Subscriber Number To : 519999 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 : Prosena Timezone : Europe/Sofia Coordinated Universal Time : +02:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 8 Latitude : 43.8600 Longitude : 26.1700 ‹ previous : +359-81-(500000...509999) next › : +359-81-(520000...529999) Dialling Instructions For trunk calls: 0 81 510000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 359 81 510000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 510000 ~ 519999 (Count: 10,000) Example: +359-81-510000 / 00359-81-510000 (081-510000 / 0-81-510000) +359-81-510001 / 00359-81-510001 (081-510001 / 0-81-510001) +359-81-510002 / 00359-81-510002 (081-510002 / 0-81-510002) +359-81-510003 / 00359-81-510003 (081-510003 / 0-81-510003) +359-81-510004 / 00359-81-510004 (081-510004 / 0-81-510004) ...+359-81-xxxxxx / 00359-81-xxxxxx (081-xxxxxx / 0-81-xxxxxx) ...+359-81-519995 / 00359-81-519995 (081-519995 / 0-81-519995) +359-81-519996 / 00359-81-519996 (081-519996 / 0-81-519996) +359-81-519997 / 00359-81-519997 (081-519997 / 0-81-519997) +359-81-519998 / 00359-81-519998 (081-519998 / 0-81-519998) +359-81-519999 / 00359-81-519999 (081-519999 / 0-81-519999)