This is the telephone area code for Daejeon and surrounding metropolitan areas in South Korea.
How to Call Daejeon from Overseas
- Dial your country's exit code (International Access Code)
- Dial 82 (South Korea country code)
- Dial the area code (42 - without the leading 0)
- Dial the local phone number
Example: Calling Daejeon from the United States
011 82 42 123 4567
Where:
011 = US exit code
82 = South Korea country code
42 = Daejeon area code (042 without the 0)
123 4567 = Local Daejeon phone number
Quick Facts
Daejeon Area Code Coverage
The 042 area code covers the entire Daejeon Metropolitan City, including:
Central Daejeon
Jung-gu, Dong-gu
Western Daejeon
Seo-gu
Southern Daejeon
Daedeok-gu (home of Daedeok Innopolis and research institutes)
Eastern Daejeon
Yuseong-gu (famous for hot springs and science parks)
Suburban Areas
Peripheral neighborhoods and university zones
Research & Innovation Hubs
Korea Advanced Institute of Science and Technology (KAIST), ETRI, and more
Major South Korea Area Codes
Common Exit Codes for Calling South Korea
When calling Daejeon from these countries, use these exit codes:
United States
011
Australia
0011
European Union
00
Japan
010
China
00
Canada
011