South Korea phone number format
How do you format a South Korea phone number?
Write a South Korea phone number with the country code +82. A mobile looks like 010-2000-0000 inside South Korea and +82 10 2000 0000 from abroad, dropping the leading 0. Mobiles have 9 or 10 digits after the country code, and the E.164 form is +821020000000. Format alone never shows a line is in service.
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Paste your South Korea numbers (a mixed list is fine). They are counted here at once; the free checker then gives every number its E.164 form, country and line type, with a file to download.
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See the phone add-onSouth Korea number format at a glance
| Country calling code | +82 |
|---|---|
| International prefix (calling out of South Korea) | More than one; + works from any mobile |
| Trunk prefix (domestic dialling) | 0 |
| Mobile number length | 9 or 10 digits after +82 |
| Landline number length | 5, 6, 8, 9 or 10 digits after +82 |
| Mobile vs landline from the digits | Yes, separate ranges |
In short: +82, 9 or 10 digits for a mobile, drop the leading 0 after +82. The checker below formats any South Korea number free in your browser; it can't say whether a line is live. Bulk phone number validator · Pro + Phone plan
Example South Korea phone numbers
These are the example numbers from Google’s libphonenumber data, the same numbering-plan data our validator uses, written three ways.
| Format | Mobile | Landline |
|---|---|---|
| National (inside South Korea) | 010-2000-0000 | 02-212-3456 |
| International | +82 10 2000 0000 | +82 2 212 3456 |
| E.164 | +821020000000 | +8222123456 |
How to write a South Korea number in E.164
- Remove spaces, dashes, dots and brackets so only digits are left.
- If the number starts with the trunk prefix 0, remove it. It is only used when dialling inside South Korea.
- Put +82 in front. The result has 9 or 10 digits after the country code for a mobile.
So 010-2000-0000 becomes +821020000000. E.164 is the format SMS gateways, dialers and most CRMs store; see the E.164 format explained for why.
Mobile or landline?
South Korea allocates separate number ranges to mobiles and landlines, so a numbering-plan check reads the line type straight from the digits, for free. That type describes the range the number came from. It doesn’t prove the number is connected today.
Mobile, landline and special number ranges in South Korea
A South Korea mobile number starts with 10, 11, 120, 121, 1221, 1223, 123–129, 16–19 after +82. Every valid number of each type below starts with one of the digit groups shown. A number that starts the right way can still be unassigned: the groups say what a range is for, not that a number is connected.
| Type | Starts with, after +82 | Dialled inside South Korea | Digits | Example |
|---|---|---|---|---|
| Mobile | 10, 11, 120, 121, 1221, 1223, 123–129, 16–19 | 010, 011, 0120, 0121, 01221, 01223, 0123–0129, 016–019 | 9 or 10 | +82 10 2000 0000 |
| Landline (fixed line) | 21–29, 31–33, 41–44, 51–55, 61–64 | 021–029, 031–033, 041–044, 051–055, 061–064 | 5, 6, 8, 9 or 10 | +82 2 212 3456 |
| Toll-free | 0030, 0036, 0079, 30, 80 | 00030, 00036, 00079, 030, 080 | 9, 11, 12, 13 or 14 | +82 80 123 4567 |
| Premium rate | 602–609 | 0602–0609 | 9 | +82 60 234 5678 |
| Universal access (UAN) | 152–154, 156–159, 160, 164, 166–168, 180, 183, 185, 187, 189 | 0152–0154, 0156–0159, 0160, 0164, 0166–0168, 0180, 0183, 0185, 0187, 0189 | 8 | +82 1544 1234 |
| Personal number | 50 | 050 | 10 or 11 | +82 50 1234 5678 |
| VoIP | 70 | 070 | 10 | +82 70 1234 5678 |
| Pager | 15 | 015 | 9 or 10 | +82 15 2345 6789 |
More on South Korea’s free-to-call and charged ranges: toll-free and premium numbers in South Korea.
Sources, checked 5 November 2026
- Ranges, lengths and examples: Google libphonenumber numbering-plan data (libphonenumber-js 1.13.15), the data our validator uses.
- Official plan: ITU-T E.164 national numbering plan for Korea (Rep. of), which covers South Korea. The regulator’s filing is the authority when the two disagree.
Validate a list of South Korea numbers
Check a single number with the free phone number validator. For a whole file, upload the CSV to the verifier: every row gets a status, the E.164 number, the country and the line type, and emails in the same file get a live mailbox check. The Pro + Phone plan ($49.99 a month) adds 5,000 live carrier lookups a month for the real line type and current carrier.
Common questions
- What is the country code for South Korea?
- The country calling code for South Korea is +82. When you call South Korea from abroad, dial your international prefix (or +) followed by 82 and the number without its leading 0.
- How many digits is a South Korea phone number?
- A South Korea mobile number has 9 or 10 digits after the country code +82, and a landline has 5, 6, 8, 9 or 10. Written for dialling inside South Korea, a number gains the trunk prefix 0 in front.
- How do I write a South Korea number in international format?
- Start with +82, drop the leading 0, then add the rest of the number. The mobile number 010-2000-0000 becomes +82 10 2000 0000, or +821020000000 in E.164, the form most CRMs and SMS tools expect.
- Can you tell if a South Korea number is a mobile?
- Usually, yes. South Korea numbers come from ranges allocated separately to mobiles and landlines, so a numbering-plan check reads the line type from the digits. It tells you what the range is for, not whether the number is in service.
- Does a valid format mean a South Korea number is in service?
- No. A valid format means the digits fit a range South Korea's numbering plan allocates. It cannot tell whether the number is connected today or who carries it, because numbers are reassigned and ported. A live carrier lookup reports the current carrier and line type, but even that does not prove someone answers.
- Can I check a list of South Korea numbers for free?
- Yes. Paste them in the list tab above or upload a CSV to the bulk phone number validator: E.164, country, format status and numbering-plan line type are free for every row, with no account. Live carrier and line-type lookups come with Pro + Phone at $49.99/mo (5,000 a month).
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