Understanding Host Name Rules: What You Need to Know

Learn the essential rules for valid host names and ensure your domain adheres to DNS standards.

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Host names must adhere to certain rules for validity: They can include letters (a-z), digits (0-9), and hyphens (-) but cannot start or end with a hyphen. Host names must be between 1 and 63 characters long. Additionally, they are case-insensitive and must not be any of the reserved names specified by the DNS standards.

FAQs & Answers

  1. What characters are allowed in host names? Host names can include letters, digits, and hyphens, but cannot start or end with a hyphen.
  2. How long can a host name be? Host names must be between 1 and 63 characters long to be valid.
  3. Are host names case-sensitive? No, host names are case-insensitive under DNS standards.
  4. What are reserved names in DNS? Reserved names are specific terms that cannot be used as host names, as defined by DNS standards.