IANA popular and important links

Domain Names Related

• DNS Root Zone — Hints File
  This file is used to prime domain name servers so they know how to connect to a DNS root server to start a query.
• DNS Root Zone
  The contents of the DNS root zone. This information is published by the DNS root servers.
• List of top-level domains
  The list of valid top-level domains, for machine-based verification. Learn more about using this file, including a software toolkit for application developers, at ICANN's project forUniversal Acceptance of All Top-Level Domains.

IP Address Related

• IPv4 Address Space
• IPv6 Unicast Address Space
• Abuse Issues

Protocol Related

• Port Numbers
• Private Enterprise Numbers (also knows as OIDs)

Internet Organisations

• IAB — Internet Architecture Board
• ICANN — Internet Corporation for Assigned Names and Numbers
• IETF — Internet Engineering Task Force
• IRTF — Internet Research Task Force
• ISOC — Internet Society
• NRO — Number Resource Organisation
• RFC Editor
• W3C — World Wide Web Consortium