# Telephone numbers in South Korea

Telephone numbers in South Korea are organized and assigned using the following scheme

## Overview

* International call out: 00N (where N is the carrier code) followed by the distant country code and telephone number.
* Calling into Korea: +82 XX XXXX YYYY. The leading "0" is dropped when dialling into South Korea from abroad.
* Some 1566/1577/1588 telephone numbers cannot be dialed from abroad.
* Domestic long-distance call: 0NN (where NN is the carrier code) followed by the 0XX area code and XXXX YYYY number. See Domestic long-distance service code and Area code.
* Call to cellular : 01N XXXX YYYY (see Mobile phone number). When phone call is made between unified 010-number subscribers, leading 010 can be dropped (XXXX YYYY).
* Special service call : 0N0 XXXX YYYY (see Special service)
For example;
* Call 02-312-3456 within Seoul: 312-3456
* Call 02-312-3456 from elsewhere: 02-312-3456
* Call 051-212-3456 within Busan: 212-3456
* Call 051-212-3456 from elsewhere: 051-212-3456
* Call 02-312-3456 from abroad: +82-2-312-3456
South Korea uses an open dialing plan with a total length (including 0) of 9 to 11 digits and, within city, subscriber numbers 7 to 8 digits long. Dialing from mobile phones to any type of phone except 010 numbers, the area code must be included.
In 1998, telephone numbers in Seoul starting with 2 and 6 added more digit (02-2XX-YYYY to 02-22XX-YYYY, 02-6XX-YYYY to 02-26XX-YYYY). Before area codes were shortened from 4 digit to 2~3 digit in June 2000, there were 1 digit exchange number (usually "2") with some 2 digit exchange numbers so some phone numbers like 0347-61-XXXX, 0443-2-XXXX or 0525-40-XXXX existed. (now 031-761-XXXX, 043-652-XXXX and 055-340-XXXX)

## Full list
### International call carrier codes

* 001 - KT international call
* 002 - LG U+ international call
* 003xx - International call over Internet Protocol or international special services
** 00365 - Sejong Telecom international call over Internet Protocol
* 005 - SK Broadband international call (Higher quality than the 5 digit prefix service from the same company)
* 006 - SK Telink international call (Higher quality than the 5 digit prefix service from the same company)
* 007xx - International call over Internet Protocol or international special services
** 00700 - SK Telink international call over Internet Protocol
** 00727 - KT international call over Internet Protocol
** 00766 - SK Broadband international call over Internet Protocol
** 00794 - Operator Service
* 008 - Sejong Telecom international call (Higher quality than the 5 digit prefix service from the same company)

### Mobile prefixes

* 010 - Mobile (All South Korea Mobile Phone Companies, from Jan 1, 2004)
* 0100 - Satellite phone (Globalstar)
* 011 - Mobile (SK Telecom, until Dec 31, 2003)(All South Korea Mobile Phone Companies, from Jan 1, 2004)
* 012 - Machine to machine (Former Beeper)
* 013x - Mobile special net (wireless vessels etc.)
* 014xx - Point-to-Point Protocol Access number
* 015 - Mobile services: Paging services
* 016 - Mobile (KT, until Jun 30, 2003)(All South Korea Mobile Phone Companies, from Jul 1, 2004)
* 017 - Mobile (SK Telecom, until Dec 31, 2003)(All South Korea Mobile Phone Companies, from Jan 1, 2004)
* 018 - Mobile (KT, until Jun 30, 2003)(All South Korea Mobile Phone Companies, from Jul 1, 2004)
* 019 - Mobile (LG U+, until Dec 31, 2004)(All South Korea Mobile Phone Companies, from Jan 1, 2005)

### Services

* 030 - UMS
* 050 - Personal number service
* 050x - Anonymous virtual number service
* 060 - Telephone based intelligent service (Premium-rate)
* 070 - Internet phone (VoIP)
* 080 - Toll-free call (some aren't free from mobiles)

### Area codes

Before June 2000, South Korea used two- to four-digit area codes.
* 02 - Seoul and parts of Gyeonggi-do (Gwacheon, Gwangmyeong and some neighborhoods of Goyang and Hanam)
* 031 - Gyeonggi-do
* 032 - Incheon and parts of Gyeonggi-do (Bucheon and some insular communities of Ansan)
* 033 - Gangwon-do
* 041 - Chungcheongnam-do
* 042 - Daejeon and a part of Chungcheongnam-do (Gyeryong)
* 043 - Chungcheongbuk-do
* 044 - Sejong City
* 049 - Kaesong Industrial Region (No longer available to call)
* 051 - Busan
* 052 - Ulsan
* 053 - Daegu and a part of Gyeongsangbuk-do (Gyeongsan)
* 054 - Gyeongsangbuk-do and a part of Daegu (Gunwi)
* 055 - Gyeongsangnam-do and a few neighborhoods of Ulsan
* 061 - Jeollanam-do
* 062 - Gwangju
* 063 - Jeollabuk-do
* 064 - Jeju-do

### Domestic long-distance carrier codes

It is not necessary to dial any carrier prefix before making a domestic long-distance call. These prefixes are needed only when you want to choose a different carrier other than your default long-distance carrier (usually the same company that provides your phoneline).
* 081 - KT
* 082 - LG U+
* 083 - Sejong Telecom
* 084 - SK Broadband
* 085xx - [Domestic long-distance Value Added Service (VAS)]
* 086 - SK Telink
* 087 - (Currently not in use)
* 088 - (Currently not in use)

### Special numbers

* 100 - KT customer center
* 101 - LG U+ Home Service customer center
* 102 - President's Office National Proposal
* 106 - SK Broadband customer center
* 107 - Video relay service
* 109 - Suicide Crisis hotline
* 110 - Government Civil Complaint Information Call Center
* 111 - NIS
* 112 - Police
* 113 - Spy reporting
* Area Code + 114 - Directory assistance (Korea Info Service)
* 115 - KT Telegram
* 116 - KT standard time service
* 117 - School Violence Hotline (from 2012, previously: report sexual trafficking of women)
* 118 - Cyber terrorism report
* 119 - Fire brigade, ambulance
* 120 - Lifestyle service
* 121 - Water utility report
* 122 - Coast guard emergency
* 123 - KEPCO electric report
* 125 - Smuggling report
* 126 - National Tax Counseling Center
* 128 - Pollution report
* 129 - Coordination with social welfare service (after October 2005)
* 1300 - Postal services
* 1301 - Narcotics report
* Area Code + 131 - Weather forecasting
* 132 - Civil Action (Korea Legal Aid Corporation - for contract disputes)
* 1330 - KNTO tourist information (bus·train schedule, hotel·inn information, free translation service)
* 1331 - Human Rights Board
* 1332 - Finance Board
* 1333 - Transport information
* 1335 - Information communication service center
* 1336 - Infringement of personal information board
* 1337 - Military Safety Board
* 1338 - Communications service center and report
* 1339 - Emergency medical treatment
* 134 - Tourist information
* 1345 - Immigration Contact Center (multilingual support)
* 1350 - Labor Board
* 1355 - National Pension Service
* 1357 - Small and medium enterprise support
* 1365 - Volunteering information
* 1366 - Domestic abuse report
* 1369 - Financial Information Inquiry
* 1377 - Foodbank
* 1379 - Unreasonable infringement of livelihood report
* 1382 - Citizen Registry Confirmation
* 1385 - Business discomfort report and board
* 1388 - Minor mistreatment report
* 1389 - Elderly abuse hotline and board
* 1390 - Election information and infringement hotline
* 1391 - Baby abuse hotline
* 1398 - Child abuse hotline
* 1399 - Unclean grocery report
* 141 - Contact room (KT)
* 182 - Missing child report hotline
* 188 - National Board of Audit and Inspection

### Collect call

* 082-17,1677 - uplus (Dacom) Collect call
* 1541 - KT Collect call
* 1677 - Sejong Telecom Collect call
* 1682 - SK Telink Collect call

### Intelligent Network

* 14XXXX
** 14XX-XX - KT nationwide single number toll-free service
* 15XXXXXX
** 1544-XXXX - LG Dacom(LG U+) nationwide single number service
** 1566-XXXX - SK Broadband nationwide single number service
** 1577-XXXX - KT nationwide single number service
** 1588-XXXX - KT nationwide single number service
** 1599-XXXX - SK Telink nationwide single number service
* 16XXXXXX
** 1661-XXXX - LG U+ nationwide single number service
** 1688-XXXX - Sejong Telecom nationwide single number service