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Glossary

Before You Start · Domain name · Website address

Domain

A domain is the web address customers type to find your website (e.g., issymo.kr).

It's like the address on your shop sign. The easier it is, the less likely customers are to get lost.
In this article
  1. 1.Where do you buy a domain, and how much does it cost?
  2. 2.What's the difference between a domain and hosting?
  3. 3.How do you choose a domain name?
  4. 4.What can you do with one domain?
  5. 5.What happens if your domain expires?
  6. 6.What should you ask a web agency that handles your domain?

A little more detail

You don't buy a domain outright. You rent it one year at a time. It has to be renewed every year, and if you miss a renewal, your website stops opening. Leave it lapsed for long and someone else can take the address.

The best addresses use your business name in English letters, or are short and easy to say. Picture reading it out over the phone: could the other person write it down correctly the first time?

Always register the domain in your business's or your own name. If it's in the web agency's name, moving the address later when you switch agencies gets difficult.

Where do you buy a domain, and how much does it cost?

You buy a domain from a domain seller called a "registrar." In Korea, examples include Gabia and Whois, and you can also register through overseas companies. Wherever you buy it, the address itself works exactly the same.

The price depends on the ending, but common ones like .com and .kr usually run about KRW 10,000–30,000 a year. Many registrars give a big discount only for the first year and then raise the renewal price, so always check the renewal price separately before you pay.

Some short, catchy addresses are sold as "premium domains" for several hundred thousand won or more. For a small business, a plain address built on your business name is far more practical than holding out for an expensive one.

When choosing a registrar, look past the price: is the dashboard easy to use, is there customer support in Korean, and do auto-renewal and expiry reminders work well? You'll keep a domain for years, sometimes more than ten, so easy management matters more than a difference of a few thousand won.

What's the difference between a domain and hosting?

A domain is the address, and hosting is the server that actually shows your website at that address. The two are often bought separately, and DNS settings connect them by saying "this address goes to that server."

So if your domain is active but your hosting lapses, the address is right but nothing loads. If your hosting is active but your domain expires, the server is fine but customers have no way to reach it. To keep your website open, all four of the items below have to stay active.

Buying the domain and hosting from one company keeps billing and management in one place, which is convenient. The catch is that if you leave that company, you have to move both together, so check from the start that each one is in your name.

Swipe the table sideways to see more

The four things a website needs to stay open
ItemWhat it doesIf your website were a shopHow you usually pay
DomainThe address customers typeThe address on your signRenewed in 1-year terms
DNSPoints the address to the serverA signpost that reads the address and gives directionsUsually included with the registrar or hosting
HostingKeeps your website files running 24 hours a dayThe building your shop is inMonthly or yearly
SSLEncrypts the information sent back and forthA sealed envelopeFree certificates with auto-renewal are common

How do you choose a domain name?

Choose a domain name that a customer can type right after hearing it once. An address can only use lowercase English letters, numbers and hyphens (-), and it doesn't distinguish between uppercase and lowercase.

You can also create a Korean-script address (for example, yourbusinessname followed by the Hangul extension for "Korea"). But some apps and email services display Korean-script addresses as a string of meaningless characters starting with "xn--", so most businesses use an English address as the main one and keep the Korean one as a backup.

Be especially careful with names that can be spelled several ways in English. For example, customers might type "Seoul Hair Salon" as seoul or soul. Use the most common spelling as your main address, and buy the confusing spellings too and point them to it.

If your business name is long, keep the name customers actually call you rather than an abbreviation. For "Haneulbit Hair Studio," for example, keeping just the key words, as in haneulhair, ties your sign and your address together naturally and makes the address stick.

  1. 01Write down 3–5 candidate English versions of your business name. (Example: Dalbit Craft Studio → dalbit, dalbitcraft, dalbitstudio)
  2. 02Say each candidate out loud and check whether family or staff can write it down correctly on the first try.
  3. 03Type it into a registrar's search box to see whether someone already uses it.
  4. 04If you use your business name as a trademark, also check the Korean Intellectual Property Office (KIPO) trademark search (for example, KIPRIS) to make sure it doesn't clash with someone else's trademark.
  5. 05Pick the ending (.kr, .com, etc.) and register it in your own name or your business's name.
  6. 06Turn on auto-renewal, and set the contact email for renewal notices to an address you check often.

What can you do with one domain?

With one domain, you can run your website address, your business email addresses and several subdomains together. Once you have an address, it works as your business's main name online, not just as a website address.

For example, if a cafe owns dalbitcafe.kr, it can tie everything to one name: the website at dalbitcafe.kr, email at hello@dalbitcafe.kr, and a coffee-bean subscription shop at shop.dalbitcafe.kr. Wherever customers see it, they instantly know it's the same business.

It's a good idea to put your domain on business cards and flyer QR codes too. Even if you later switch web agencies or booking services, as long as the domain stays the same, you won't need to reprint materials you've already handed out.

What happens if your domain expires?

When a domain expires, the website and business email connected to it stop working together. Your website files aren't deleted, but to customers it looks like your business has closed.

An expired domain doesn't go to someone else right away; there's usually a grace period when you can still recover it. But the length of that period and the recovery cost vary by ending and registrar, and once it passes, someone else can register your address. The longer you've used an address, the more it has spread through search results, business cards and signs, so losing it hurts more.

Most expiry accidents happen because "nobody saw the notice." It's common for renewal notices to go to a former employee's or the web agency's email, or for the card used for automatic payment to have changed.

If your business email uses the same domain, the damage is even bigger. If your website is down for a few days, customers can still call and ask, but if supplier order emails or booking confirmations quietly bounce, you may not notice for a long time.

  • Mark the expiry date on your calendar and check again one month before
  • Check the expiry date of the card used for automatic payment
  • Renew for several years at once so you worry less about renewals

What should you ask a web agency that handles your domain?

First, ask "whose name will the domain be registered under?" Even if the agency buys it for you, the registrant should be your business or you, so you keep the address if you ever switch agencies.

Next, put in writing, in the contract or a message, who takes care of renewals and who pays for them. If it's only agreed verbally, memories tend to differ a few years later when the person in charge changes.

You can also move a domain to a different registrar. Usually you get a transfer authorization code from your current registrar and request the transfer at the new one, and some registrars block another transfer for a set period right after registration or a transfer. If you're only changing web agencies, keep the domain where it is and just change the connection settings.

  • Is the registrant (owner) your business or you?
  • Will you give me the registrar account ID and password too?
  • Who keeps track of the renewal date and cost?
  • How do I take over the domain when the contract ends?

For example

  • For a shop called Dalbit Craft Studio, start by checking addresses built on the name, like dalbit.kr or dalbitcraft.com.
  • Addresses with lots of hyphens (-) or numbers (dal-bit-2024.com) are hard to say out loud, so it's best to avoid them.

Just check these

  • The domain is registered in your business's or your own name
  • You know the expiry date, and auto-renewal is turned on
  • You know the login ID and password for the registrar account

Does my business need it?

You need one if you're building a website. If you already have an address, we can connect it as is.

At ISSYMO

Domain connection is included in every plan. If you don't have an address yet, the "Domain purchase on your behalf" option has us buy it for you, and with a maintenance subscription we keep track of renewal dates too.

See options

FAQ

Sources

  • MDN · What is a domain name?
  • ICANN · A beginner's guide
  • Korea Internet & Security Agency (KISA) · Korea Network Information Center (KRNIC)

Last updated 2026. 10. 22.

Related terms

  • Domain extensions (.com · .kr · .co.kr)
  • DNS · Name servers
  • Hosting
  • Business email (domain email)
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Next termDomain extensions (.com · .kr · .co.kr)

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