Area Code +65-3-(1230000...1239999) located in VoIP, more detail is as below. Place International Dialing Code : 65 International Prefix : 00 National Destination Code : 3 Subscriber Number From : 1230000 Subscriber Number To : 1239999 National Destination Code Length : 1 Uses National Destination Code : No National Significant Number Length : 8 Number Type : V (VoIP, Location Independent fixed land line) Carrier Name : StarHub Ltd Click here to buy Singapore Area Code Database Other Information Language Code : en (English) Country Number : 702 (Singapore) Country Code : SG (Singapore) City : VoIP Timezone : Asia/Singapore Coordinated Universal Time : +08:00 Daylight Saving Time : No National Significant Number Minimum Length : 8 Latitude : 1.3500 Longitude : 103.8200 ‹ previous : +65-3-(1220000...1229999) next › : +65-3-(1240000...1249999) Dialling Instructions For trunk calls: - 3 1230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 65 3 1230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1230000 ~ 1239999 (Count: 10,000) Example: +65-3-1230000 / 0065-3-1230000 (3-1230000 / -3-1230000) +65-3-1230001 / 0065-3-1230001 (3-1230001 / -3-1230001) +65-3-1230002 / 0065-3-1230002 (3-1230002 / -3-1230002) +65-3-1230003 / 0065-3-1230003 (3-1230003 / -3-1230003) +65-3-1230004 / 0065-3-1230004 (3-1230004 / -3-1230004) ...+65-3-xxxxxxx / 0065-3-xxxxxxx (3-xxxxxxx / -3-xxxxxxx) ...+65-3-1239995 / 0065-3-1239995 (3-1239995 / -3-1239995) +65-3-1239996 / 0065-3-1239996 (3-1239996 / -3-1239996) +65-3-1239997 / 0065-3-1239997 (3-1239997 / -3-1239997) +65-3-1239998 / 0065-3-1239998 (3-1239998 / -3-1239998) +65-3-1239999 / 0065-3-1239999 (3-1239999 / -3-1239999)