The Internet Engineering Task Force (IETF) 
Home page of the Internet Engineering Task Force (IETF), the protocol engineering and development arm of the Internet. Their page offers information about the organization, as well as links to working groups, topics, mailing lists, meetings, and proceedings.
DNS Basics for IIS Administrators
The process of configuring DNS involves a few pieces: configuring your DNS server, registering your DNS name, and in some cases, configuring IIS to respond to the requests.
ICANNWatch
Presents issues, news, and ICANN's actions regarding the Domain Name System.
Naming Concepts
A fundamental facility in any computing system is the naming service--the means by which names are associated with objects and objects are found based on their names.
Yahoo!'s Domain Name Service (DNS) page
Yahoo!'s directory of Domain Name Service (DNS) links.
DNS resources directory
This directory provides links to recent DNS news items, reference materials (FAQs, mailing lists, documents, etc.), DNS server software and tools, and additional Web related resources.
DNS/DHCP/WIN Release Notes
Covers some advanced details about how NT4SP4 handles WINS, DHCP and DNS.
Domain.com
Domain name registration, Web hosting, e-mail services, domain search, and SEO services.
RFC 1123
One of the most important RFCs, covering requirements for Internet client software, including Telnet, FTP, SMTP, and DNS.
Webopedia's Quick Reference Section
Use this Webopedia reference section for information on common Internet and computer facts and occurrences.