Area Code +381-21-(6510000...6513999) located in Novi Sad, more detail is as below. Place International Dialing Code : 381 International Prefix : 00 National Prefix : 0 National Destination Code : 21 Subscriber Number From : 6510000 Subscriber Number To : 6513999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : TELEKOM SRBIJA Click here to buy Serbia Area Code Database Other Information Language Code : sr (Serbian) Country Number : 688 (Serbia) Country Code : RS (Serbia) City : Novi Sad Timezone : Europe/Belgrade Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 45.2600 Longitude : 19.8500 ‹ previous : +381-21-(6503000...6506999) next › : +381-21-(6518000...6533999) Dialling Instructions For trunk calls: 0 21 6510000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 381 21 6510000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6510000 ~ 6513999 (Count: 4,000) Example: +381-21-6510000 / 00381-21-6510000 (021-6510000 / 0-21-6510000) +381-21-6510001 / 00381-21-6510001 (021-6510001 / 0-21-6510001) +381-21-6510002 / 00381-21-6510002 (021-6510002 / 0-21-6510002) +381-21-6510003 / 00381-21-6510003 (021-6510003 / 0-21-6510003) +381-21-6510004 / 00381-21-6510004 (021-6510004 / 0-21-6510004) ...+381-21-xxxxxxx / 00381-21-xxxxxxx (021-xxxxxxx / 0-21-xxxxxxx) ...+381-21-6513995 / 00381-21-6513995 (021-6513995 / 0-21-6513995) +381-21-6513996 / 00381-21-6513996 (021-6513996 / 0-21-6513996) +381-21-6513997 / 00381-21-6513997 (021-6513997 / 0-21-6513997) +381-21-6513998 / 00381-21-6513998 (021-6513998 / 0-21-6513998) +381-21-6513999 / 00381-21-6513999 (021-6513999 / 0-21-6513999)