Host Name Not Resolving But IP works

🔍 Common Symptoms:

• ❌ ping [hostname] → “Ping request could not find host”
• ✅ ping [IP address] → Success
• ✅ Internet and gateway reachable
• ✅ External DNS (e.g., google.com) resolves
• ❌ nslookup [hostname] fails

🧠 Root Cause:

• The hostname is not registered in DNS
• DNS server is reachable and functional, but the specific A record is missing
• The service itself is up and reachable by IP

✅ What to Do:

1. Check for missing DNS records:
   • nslookup [hostname] [DNS server IP]
   • Or dig @[DNS server IP] [hostname]
2. Confirm with DNS/admin team if the record should exist
3. Workaround:
   • Access service directly via IP
   • (If allowed) use the local hosts file to manually resolve the name