Dialing telephone calls from Christmas Island to Saint Helena
0011
▶ 290
▶ city code
▶ local number
Step-by-step
0011
▼ This IDD (International Direct Dial) prefix tells the phone system in Christmas Island that you are dialing an international number.
290
▼ Country code for Saint Helena.
city code
▼ local number
Notes
If you are calling from a hotel or office phone system, additional steps may be required.