What is the difference between A and AAAA records?

An A record maps a domain to an IPv4 address, while an AAAA record maps it to an IPv6 address. If your server supports IPv6, you should configure both record types.

How long does it take for A/AAAA record changes to take effect?

It depends on the previous record's TTL value. A TTL of 3600 (1 hour) means up to 1 hour; 86400 (24 hours) means up to 24 hours. Lower the TTL to 300 seconds before making changes for faster propagation.

My DNS lookup says there is no A record. What should I do?

Go to your DNS management panel, add an A record with the correct server IPv4 address for your domain. Also verify that your nameservers are properly configured and pointing to the right DNS host.

A/AAAA Record Troubleshooting Checklist

A step-by-step guide for diagnosing and fixing missing or incorrect A/AAAA DNS records.

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Problem

Your domain is unreachable and a DNS lookup shows no A or AAAA records.

Top 3 Causes

Records not created — A/AAAA records were never added in the DNS management panel.
Wrong IP address — After a server migration, the old IP address is still configured.
Nameserver mismatch — The domain’s NS records don’t point to the actual DNS hosting provider.

Diagnosis with DechoNet

DNS Lookup — Check whether A/AAAA records exist and verify their TTL values.
RDAP Lookup — Verify that nameservers are correctly configured.

Resolution Checklist

In your DNS management panel, add an A record with the correct server IPv4 address.
If your server supports IPv6, add an AAAA record as well.
After making changes, wait for the TTL duration to expire or flush your local DNS cache.