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DNS Fundamentals
This course will introduce you to the basics of the Domain Name System (DNS). Topics include the different components of the DNS, resource records, processes such as DNS delegations, resolution, and caching, and the importance of avoiding security risks associated with DNS behavior.
Registrant Essentials
This course aims to educate both actual domain name holders (registrants) and the broader end-user community about the rights and responsibilities of registrants.
Root Server Essentials
This course will explain a vital part of the Internet infrastructure – root servers – and their role in the DNS resolution process.
More from ICANN
The Domain Name System
The Domain Name System (DNS) helps users navigate the Internet. Every device on the Internet has a unique address called an Internet Protocol (IP) address. IP addresses can be hard to remember. The DNS makes…
Registering Domain Names
Domain names under generic Top-Level Domain Names (gTLDs) may be registered with one of more than two thousand ICANN-accredited registrars, or their resellers. Registrars are accredited…
Spam, Phishing, and Website Content
ICANN organization doesn’t control content on the Internet. It cannot stop spam and it doesn’t deal with access to the Internet. Its agreements with …