City Name / Region National Dialing Format International Dialing Format
City6212XXXX+65 6212XXXX
City6216XXXX+65 6216XXXX
City6217XXXX+65 6217XXXX
City6230XXXX+65 6230XXXX
City6231XXXX+65 6231XXXX
City6232XXXX+65 6232XXXX
City6239XXXX+65 6239XXXX
City6317XXXX+65 6317XXXX
City6327XXXX+65 6327XXXX
City6342XXXX+65 6342XXXX
City6422XXXX+65 6422XXXX
City6423XXXX+65 6423XXXX
City6428XXXX+65 6428XXXX
City6435XXXX+65 6435XXXX
City6437XXXX+65 6437XXXX
City6438XXXX+65 6438XXXX
City653XXXXX+65 653XXXXX
City6557XXXX+65 6557XXXX