South Korea Phone Number Format Guide
Domestic numbers use a leading zero, removed after +82. Seoul uses 02, while mobile numbers commonly start 010 domestically.
Standard format
+82 area/subscriber
Example
+82 2-1234-5678
Implementation and validation notes
Domestic numbers use a leading zero, removed after +82. Seoul uses 02, while mobile numbers commonly start 010 domestically.
Validate required state, character set, length, and syntax on the client, then repeat validation on the server. Preserve the original input and normalize into a separate field; never truncate local scripts, compound names, or leading zeroes to fit a single Western assumption.
This guide describes common formats rather than an official registry and cannot enumerate every exception. Generated output is for testing only, not delivery, calling, identity verification, or real account activity.
Related resources
Frequently asked questions
What is the standard South Korea phone number format?
A common representation is +82 area/subscriber, for example +82 2-1234-5678. Domestic numbers use a leading zero, removed after +82. Seoul uses 02, while mobile numbers commonly start 010 domestically.
How should South Korea phone number test data be stored?
Store the original value as a string so leading zeroes, spaces, hyphens, accents, and local scripts are preserved. Use a separate normalized field for search.
Does correct formatting prove the data is real?
No. Syntax validation cannot prove an address is deliverable, a number is assigned, or a name belongs to a real person.