A Domain, a domain name is an identification string that defines a realm of administrative autonomy, authority or control within the Internet. To use, access, fulfill, and utilize web resources, domain name is an essential part of internet for human being to recognize the objects on the internet.

  • Google Domains — Google Domains, NOT attractive in price. Better choice to use Google DNS services
  • GoDadday — Supports various and unique .domains

Hugh amount of domain registrars are listed and take one with your strategy including pricing and service quality. Initial price for the first year is low to attract customer. Renewal price every year should be considered for further maintenance.

Once taking final registar for your own domain name(s), Sign Up, Search, Select and Purchase Then you have the right to utilize domain(s) — You are the OWNER of domain(s).

  • Freenom - A name for everyone — Free of charge for .tk, .ml, .ga, .cf, .gq Prices could be charged for short or popular names. It's recommended to experience configuring domains.

Assumed as purchased domain for current manual.

Domain Name Server is a directory book of internet. All web resources connected internet have IP address like consisted of four numbers. But human beings have rare ability to recognize those kinds of numbers. DNS is a directory book mapping domain name(s) and IP address(es) and it returns the value of IP address for mapped domain name.

DNS services

  • Free DNS — Free / Premium service / Donation, operated by Joshua Anderson 3)
  • DNSZi — Free service / operated by PHP School 4)
  • ClouDNS — Free (3 zones) / Paid service 5) , Supports URL fowrwarding
  • 1984 FreeDNS — Free / Paid service 6) , Iceland based service. Supports URL forwarding

Domain registrars such as Google Domains and GoDaddy provide DNS services inherently. Also setting up the external DNS is optional.

External DNS values

Set nameservers in Domain registrar with external DNS option.

  • Cloudflare
    • NAMESERVERS : Shown in Cloudflare page (2 servers usually)
  • Hurricane Electric
  • Free DNS (
  • DNSZi
    • NAMESERVERS : Shown in DNSZi page (5 servers usually)
  • ClouDNS : Shown in ClouDNS page (dual servers)

Check DNS hosting speed

URL for your homepage, blog and so on to

email address with your domain name to

URL shorten with your domain name

— Shortened URL like or to

Web forwarding with your domain name 7)

— Intangible URL like…168C1B78 to

Whatever you want …

A AAAA records

Primary function of DNS is pointing IP address for domain name.

  • A

— If you type as address in browsers, you can reach the machine whose IP address is

  • AAAA is for IPv6 protocol

— A (AAAA) records can be used not only Public IP but also Private IP such as

CNAME records

CNAME is alias name mapping with another domain name.

  • CNAME is pointing to same IP address with It also uses for hosting configuration such as blogger and so on.

As a experimental aspect, running an email server is suggested, But not recommend for real usage. Therefore, email hosting service is necessary to have custom domain email.

Email with custom domain

Suggest email hosting services (only with personal opinion)

  • Google G Suite — reliable and fast but only Paid service currently
  • Zoho Email — Free / Premium and reliable, intuitive interface
  • Migadu Email — 🇨🇭 Swiss Made / Free / support multi domains in a single account
  • Yandex.Mail — Free / Premium, reliable but Sometimes 🇷🇺Russian pops up
  • Daum Smartwork — Free (restricted) and simple, Korean 🇰🇷

If you want forwarding all email for your domain.

  •, all email sending to will be forwarding to desired email address.

MX records

MX record assigns delivery point for email. MX records is only for mail delivery. Not necessary being identical with A record Setup for MX will provided by email hosting services.

SPF / DKIM records

— Check email hosting provides proper ways to protect email validation and prevent the non-authorized from abusing.

SPF Sender Policy Framework (SPF) is a simple email-validation system designed to detect email spoofing by providing a mechanism to allow receiving mail exchangers to check that incoming mail from a domain comes from a host authorized by that domain's administrators.

DKIM DomainKeys Identified Mail (DKIM) allows senders to associate a domain name with an email message, thus vouching for its authenticity.

(Optional) DMARC Domain-based Message Authentication, Reporting and Conformance (DMARC) is an email-validation system designed to detect and prevent email spoofing.

Shortening URL is useful to share an URL/URI, which are usually long strings.

Service Providers

  • — Reliable and popular, 1 brand name (custom domain) for free account
  • Kutt — support one custom domain

Practical usages

  • Simple shortening
    • Shorten your long address (URL) into short link such as Here, you can use your own domain to shorten your URL
  • URL memorable
    • Like bookmarks, you can shorten with memorable address. For instance, can be shorten address for downloading subtitle. Customize slash-tag to memorize easily.
  • Sharing with authentication code
    • Sharing file or folder throughout cloud services, sharing address is too long and contains authentication key in URL. Shorten service can make a simple address including authentication key. e.g.)…168C1B78 into
  • Statistical analysis
    • Once you share with shorten URL, service provides statistical analysis such as counts, regions and son on. For service, shows the statistical analysis for URL.

A, (AAAA), CNAME records are pointing to the IP address eventually. If your DNS service has web forwarding features, you can use subdomain such as for forwarding.

  • Google Domains Subdomain forward
  • Cloudflare ™ Page Rules 9)
    • Forwarding rule uses wildcards (*, $1), is forwarding to, which shows the unread mail of
  • Free DNS by Web Forward
    • Cloak, hides original URL and shows only forwarding URL.
    • Force Dir Root, ignores URI path.

Forwarding functions are different depending on the services.

Dynamic DNS is a method of automatically updating a name server in the Domain Name System, often in real time.

Configure Dynamic DNS

Major router manufacturers provide Dynamic DNS option with their own server

  • ipTIME — configured in router settings, major manufacturer in Korea 🇰🇷
  • D-Link —
  • No-IP: Dynamic DNS service commonly used — 3 dynamic DNS for free account with periodic confirmation

1) , 4) , 8)
.tk, .ml, .ga, .cf, .gq are not accepted
2) , 3) , 5) , 6)
.tk, .ml, .ga, .cf, .gq are accepted
This feature is available depending on DNS services.
3 rules are available for free account
  • manual/domain_works
  • Last modified: 2020/02/14 09:29
  • by Júne Park