DNS

DNS is the internet system that maps domain names to server addresses.

DNS maps human-readable domain names to server IP addresses. It is used for websites, mail, subdomains, and search engine ownership verification.

DNS changes may take time to propagate across name servers, so results may not appear immediately.

✅ Why it matters

• Separates domain names from server addresses
• Foundation for subdomains, mail, and verification records

⚠️ Limits and debates

• Propagation delays can slow verification
• Wrong records can break web or mail access