City Name / Region National Dialing Format International Dialing Format
Changi6214XXXX+65 6214XXXX
Changi6540XXXX+65 6540XXXX
Changi6541XXXX+65 6541XXXX
Changi6542XXXX+65 6542XXXX
Changi6543XXXX+65 6543XXXX
Changi6545XXXX+65 6545XXXX
Changi6546XXXX+65 6546XXXX
Changi6548XXXX+65 6548XXXX
Changi6549XXXX+65 6549XXXX