Dialing telephone calls from Hong Kong to Singapore
001
▶ 65
▶ XXXX-XXXX
Step-by-step
001
▼ This IDD (International Direct Dial) prefix tells the phone system in Hong Kong that you are dialing an international number.
65
▼ Country code for Singapore.
There are no area/city codes in Singapore.
XXXX-XXXX
All local telephone numbers in Singapore are 8 digits long.
Notes
Not sure what time it is on the other end of the line? Look here for Singapore time, date, and time zone information.
If you are calling from a hotel or office phone system, additional steps may be required.