Area Code +381-21-(400000...403999) 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 : 400000 Subscriber Number To : 403999 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 : 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 : 8 Latitude : 45.2600 Longitude : 19.8500 ‹ previous : +381-21-(3800000...3800999) next › : +381-21-(410000...410999) Dialling Instructions For trunk calls: 0 21 400000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 381 21 400000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 400000 ~ 403999 (Count: 4,000) Example: +381-21-400000 / 00381-21-400000 (021-400000 / 0-21-400000) +381-21-400001 / 00381-21-400001 (021-400001 / 0-21-400001) +381-21-400002 / 00381-21-400002 (021-400002 / 0-21-400002) +381-21-400003 / 00381-21-400003 (021-400003 / 0-21-400003) +381-21-400004 / 00381-21-400004 (021-400004 / 0-21-400004) ...+381-21-xxxxxx / 00381-21-xxxxxx (021-xxxxxx / 0-21-xxxxxx) ...+381-21-403995 / 00381-21-403995 (021-403995 / 0-21-403995) +381-21-403996 / 00381-21-403996 (021-403996 / 0-21-403996) +381-21-403997 / 00381-21-403997 (021-403997 / 0-21-403997) +381-21-403998 / 00381-21-403998 (021-403998 / 0-21-403998) +381-21-403999 / 00381-21-403999 (021-403999 / 0-21-403999)