From Koreatown parents to a startup founder in Pangyo, this is how you reach a real person in South Korea from your browser.
Rates updated September 15, 2026
To reach a South Korea number from the United States, dial these three parts in order.
011 82 10 2000 0000
From any mobile, anywhere in the world, you can dial +82 10 2000 0000 instead. Press and hold 0 to type the +, and the phone picks the right access code for wherever you are.
Numbers in South Korea are written locally with a 0 in front, like 010-2000-0000. Calling from abroad you leave that 0 out, so it becomes +82 10 2000 0000.
A typical South Korea mobile number is 10 digits after +82. If a call does not connect, count the digits first.
Only the first part changes. Your access code replaces the 011, then 82 and the number stay exactly the same.
A ~ means wait for the second dial tone before dialing the rest. It is not a digit you press.
Calls to South Korea are $0.07 a minute, billed by the minute. There is no connection fee, no monthly plan, and no minimum spend. You add prepaid credit from $5, and it never expires.
Only for the time you actually talk.
Top up once, use it whenever.
Any number, nothing to install.
The heaviest inbound flow into South Korea comes from the United States, home to roughly 1.5 to 1.8 million Korean Americans (Migration Policy Institute). Nearly half of Korean immigrants live in just three states: California (about 30 percent), New York (8 percent), and New Jersey (7 percent) (MPI). The single densest hub is Greater Los Angeles, with around 320,000 Korean Americans and the country's largest Koreatown off Wilshire (Wikipedia). From LA, Orange County (Irvine, Fullerton, Buena Park, Garden Grove), Bergen County NJ, and Queens NY, the calls are relentlessly personal: adult children phoning parents in Seoul or Busan, weekend calls to grandparents in the provinces, and small-business owners coordinating with suppliers back home.
Beyond the US, large diaspora populations in China, Japan, Canada (Toronto and Vancouver), Australia, and Germany feed steady traffic, alongside the enormous transactional layer created by Korea's export economy: Samsung, Hyundai, LG, and SK vendors, K-beauty and K-pop partners, and semiconductor buyers dialing Seoul (02), the Pangyo tech corridor in Gyeonggi (031), and the Busan (051) port. Add hundreds of thousands of exchange students, English teachers, and US military families near Pyeongtaek and Osan calling home, and Korea is a country that gets called into constantly, from a handful of very specific American zip codes.
Start your international call. From InternationalCall.co in the browser you simply enter the number in full international form, no access code to remember.
Enter South Korea's country code, 82.
Drop the leading trunk 0 from the Korean number. A Seoul line written 02-1234-5678 becomes 2-1234-5678; a mobile written 010-1234-5678 becomes 10-1234-5678.
Dial the rest: the area code (or 10 for a mobile) plus the subscriber number. After +82, Seoul landlines are 8 digits and mobiles are always 10 digits (10 followed by eight).
The rule that trips up every first-time caller: drop the trunk 0. Korean numbers are always written locally with a leading 0 (02, 031, 010), but that 0 is a domestic trunk prefix you never dial after +82 - Wikipedia. So +82 10 1234 5678 is correct and +82 010 ... is wrong. Length varies by line: Seoul (02) is the only 2-digit area code, while all other regions use 3-digit codes (0XX) - Wikipedia. Mobiles are the dependable ones: always 010 plus 8 digits since the 2004 unification, so +82 10 followed by eight digits. Do not try to reach 1588/1577/1544-type representative numbers from abroad; these nationwide business lines are not routable internationally - Wikipedia.
The number that makes South Korea hard to reach is rarely the mobile. Every Korean mobile is a clean 010 plus 8 digits (Wikipedia), the most call-friendly format in Asia. The friction is everything else. 1588, 1577, 1544, 1566, and 1661-type representative numbers (the nationwide single-number lines that banks, airlines, delivery firms, and government offices publish) are not dialable from outside Korea at all (Wikipedia). If a KakaoBank or Korean Air help line is printed as 1588-XXXX, an overseas caller simply cannot connect to it, and there is usually a separate, unadvertised +82 geographic number for international callers.
Then there is the 070 VoIP problem, which is really a trust problem. 070 is a legitimate internet-phone prefix, but it has been so thoroughly captured by scammers that many Koreans reflexively decline any 070 call (Wikipedia). Korea is in the middle of a genuine voice-phishing (보이스피싱) epidemic: losses in the first half of 2025 alone were counted in the trillions of won, and government-impersonation scams roughly quadrupled year on year (GASA State of Scams 2025). Average monthly spam-call volume nearly doubled across 2025 (GASA). In response, like LG U+'s ixi-O, which score call patterns and warn or block suspected fraud ().
Start with the first two or three digits and everything else follows. 010 means mobile, always, with an 8-digit subscriber number after it, so the full domestic form is 010-XXXX-XXXX (11 digits including the trunk 0) (Wikipedia). Since the 2004 unification there is no other mobile prefix in active use, which makes mobiles the easiest lines in the country to recognize and to reach.
Landlines carry a geographic area code, and Korea deliberately keeps them short. Seoul is the only 2-digit code, 02; every other region uses a 3-digit code beginning with 0 (Wikipedia). Notable ones: Busan 051, Incheon 032, Daegu 053, Daejeon 042, Gwangju 062, Ulsan 052, the sprawling Gyeonggi province 031 and 032, Gangwon 033, Jeju 064, and Sejong 044 for the administrative capital (Wikipedia). A Seoul landline runs about 9 or 10 digits total; provincial landlines are similar. This short-code scheme is a result of the June 2000 reform, which collapsed a messy 2-to-4-digit patchwork into the clean 2-and-3-digit system Korea uses today (Wikipedia).
Anything that is neither 010 nor a geographic code is a , and each tells you something. (internet phone, common for call centers and cheap home lines), (though not always free from mobiles), and (). Reading the prefix is the fastest way to know what kind of line you are about to call and whether it will even accept an overseas connection.
Older Koreans still say 'my 011 number' out of habit, and there is real history there. Before 2004, your mobile prefix advertised your carrier: 011 was SK Telecom, 016 was KT, and 017, 018, and 019 belonged to the others (Wikipedia). The government's 010 integration policy, launched at the end of 2002, forced every new activation onto a single 010 prefix from January 1, 2004 (namu.wiki), deliberately erasing carrier identity from the number so it could not be used as a marketing moat.
The holdouts kept their old 01X numbers for years, tied to legacy 2G service, and the transition only truly finished when the last 2G network died: KT in 2012, SK Telecom in 2020, and LG U+ on June 30, 2021, at which point 010 integration was declared complete on July 1, 2021 (namu.wiki). So if you are still dialing an 011 or 016 number for an old relative, it no longer exists; they have a 010 number now.
There is even a capacity story. The 010 space holds about 100 million numbers, but the 0000 to 0999 blocks are reserved, leaving roughly 90 million assignable, of which the three big carriers have already been allocated tens of millions with a reserve block held back for a potential fourth mobile operator (namu.wiki). For a caller, the takeaway is simple and reassuring:
Korea introduced mobile number portability in 2004, letting people keep their 010 number when switching between SK Telecom, KT, and LG U+ (Wikipedia). The number stopped meaning anything about the carrier and became a permanent personal identifier, which is exactly why Koreans treat their 010 number as semi-sacred and rarely change it. For an overseas caller this is good news: the number your cousin gave you five years ago almost certainly still rings the same person, even if they have hopped carriers or moved onto a cheap MVNO (알뜰폰, altteulpon) reseller running on one of the three networks.
The deeper reality is that KakaoTalk has partly replaced the phone number as the way Koreans reach each other. Voice and video happen inside the app, tied to that same 010 number as the account identity. This creates a subtle reachability gap: a relative may go hours without noticing a missed cellular call because their attention lives in Kakao. The workaround, again, is to send a Kakao message first so the person knows a real voice call is coming, then dial the actual number.
One caution on portability confusion: because MVNOs and virtual lines proliferated, a single person may hand out a 070 VoIP number for a home office or side business alongside their 010 mobile. Always prefer the 010 mobile for a person and the geographic landline for a shop or office; the 070 alternates are the ones most likely to be screened out by spam filters.
Korean organizations love the representative number (대표번호): a short national line like 1588, 1577, 1544, 1566, or 1661 that routes to a call center regardless of where the caller is in the country (Wikipedia). These are convenient inside Korea and useless outside it, because they cannot be dialed internationally (Wikipedia). If you need a Korean bank, telecom, hospital, or ministry from abroad and all you have is a 1588 number, look for the geographic +82 head-office line (often a Seoul 02 number) that these organizations publish specifically for overseas customers.
Government and civic lines follow a different logic: Korea uses short 3-digit numbers for public services, and the ones worth knowing are 112 (police), 119 (fire and ambulance), and 120 (the Seoul city Dasan Call Center for general municipal help). These short codes work only from inside Korea, so from abroad you would call the relevant office's full +82 number instead.
Banking adds one more wrinkle that catches diaspora callers off guard. Korean financial services lean heavily on domestic identity verification and app-based OTP tied to a Korean 010 number, so even reaching a human on a bank line does not always let an overseas caller complete a transaction without that local number and ID. When you call a Korean bank or the immigration Hi Korea service from the US, expect the phone call to be step one of a process that may still require a Korean phone in hand. Reaching the person (your relative, your accountant, your landlord) on their 010 mobile is far more reliable than trying to punch through an institution's automated menu from overseas.
South Korea runs on a single Korea Standard Time (KST), UTC+9, and critically it does not observe daylight saving time (Wikipedia). The US does, so the gap between the two countries shifts twice a year. In US winter (standard time) Seoul is 14 hours ahead of Eastern and 17 ahead of Pacific; in US summer (daylight time) it narrows to 13 and 16 (Wikipedia). Do not memorize a fixed number; recheck the offset around March and November each year.
Practically, the cleanest overlap for reaching a working adult in Korea is your US evening. Around 6 to 9pm Eastern lands at roughly 8 to 11am the next day in Seoul, catching people as their workday starts. West Coast callers get a similar window in their late afternoon and evening. The trap is calling during your own US daytime: your lunchtime is Korea's small hours, and no relative, business, or bank will thank you for a 3am ring.
One cultural timing note: Korean workdays start early and business is often reachable by 9am KST, but elders keep early hours and appreciate calls landing in their morning or early evening, not late at night. Since Korea never shifts its clocks, the Korean side of the equation is always stable; it is only the American clock changing underneath you.
Look at the front. 010 means mobile, always, with 8 digits after it - Wikipedia. A 2 or 3 digit area code (Seoul 02, Busan 051, and so on) means a landline. If it starts with 070 it is a VoIP line, 080 is toll-free, and 050 is a personal virtual number. For calling a specific person, the 010 mobile is almost always the right one.
Because 1588, 1577, 1544 and similar representative numbers are national short-lines that cannot be dialed from outside Korea - Wikipedia. Banks, airlines, and agencies publish them for domestic callers. From abroad you need the organization's full geographic +82 number (often a Seoul 02 line), which most large companies list separately for international customers.
No. Korea moved every mobile onto the single 010 prefix, and the old carrier-specific prefixes 011, 016, 017, 018, 019 were fully retired when the last 2G network shut down and 010 integration completed on July 1, 2021 - namu.wiki. Your relative now has a 010 number; ask them for the current one.
Korea is fighting a serious voice-phishing (보이스피싱) wave, with spam call volumes and fraud losses climbing sharply through 2025 - GASA. Carrier AI filters (fed by KISA data) now flag unfamiliar and 070-style numbers, and many Koreans decline unknown calls on reflex. Send a KakaoTalk message first so your call is expected, and the person will pick up.
Korea is UTC+9 with no daylight saving, so it sits 13-14 hours ahead of US Eastern and 16-17 ahead of Pacific, and the gap shifts when the US changes clocks - Wikipedia. The easy window is your US evening: around 6-9pm Eastern is 8-11am the next morning in Seoul. Avoid your US afternoon, which is the middle of the Korean night.
That is for calling out of Korea, where each carrier has its own exit code (KT 001, LG U+ 002, SK Telink 00700) - Wikipedia. Calling into Korea, you just use the country code 82, drop the leading 0, and dial. From your browser you type the full international number and connect, no carrier code needed on either end.
Add a little credit and dial any South Korea number right from your browser.
Start callingCalling out of South Korea has a quirk almost no other country has: there is no single international access code, each carrier owns its own. You dial 00 + a carrier code, so KT uses 001, LG U+ uses 002, and SK Telink uses 00700, followed by the destination country code and number (Wikipedia). To reach a US number like 212-555-0100 from a Seoul phone you would dial 001-1-212-555-0100 (carrier prefix, then 1 for the US) (Incheon Metropolitan City). Different carriers historically meant different rates for the same call, which is why Koreans learned to shop exit codes, and why smartphone dialers simply insert the + today.
The outbound map mirrors the inbound one: the United States first (family, study, business), then China and Vietnam (manufacturing and a very large Vietnamese and Chinese resident community in Korea), Japan and the Philippines, and increasingly Uzbekistan, Thailand, and Nepal reflecting Korea's migrant workforce. A browser service sidesteps the carrier-code puzzle entirely: you never pick 001 versus 002, you just type the full international number and connect.
The practical fallout for a legitimate overseas caller: an unknown international or 070-looking number may be silently filtered, sent to voicemail, or shown with a red spam warning on the recipient's screen. The fix is not technical, it is social. Text ahead on KakaoTalk (which nearly every Korean uses) so your call is expected, and the person picks up. Elderly relatives, the group most targeted by phishing, are also the most likely to ignore an unfamiliar ring, so a heads-up message matters most exactly where the emotional stakes are highest."