DNS FAQ

Short answers for the questions that show up after a migration, a bounce, or a certificate that will not issue.

Is DNSFetch free to use?

Yes. There is no account and no paid tier for lookups. A per-IP rate limit keeps the resolver path available for everyone.

How long does DNS propagation take?

It is cache expiry, not a global push. Expect minutes when TTL is low, and up to 24–48 hours if the previous TTL was a day or more. Some ISPs clamp very low TTLs upward.

Why does my laptop show a different IP than DNSFetch?

Your OS, browser, VPN, or ISP resolver is still caching the old answer. DNSFetch queries from the server. Flush the local cache and wait out the TTL.

What is the difference between A and CNAME?

A maps a name to an IPv4 address. CNAME aliases a name to another name. They cannot both exist on the same hostname. The zone apex cannot be a CNAME in standard DNS.

Do I need both SPF and DMARC?

SPF alone does not protect the visible From header. DMARC uses SPF and DKIM alignment and then applies a policy. Use both, plus DKIM, for a domain that sends mail.

Where do I publish a DMARC record?

As a TXT record on the hostname _dmarc.yourdomain, not on the naked domain. The string starts with v=DMARC1.

Why is there no DKIM record on my domain?

DKIM lives at selector._domainkey.yourdomain. The selector is chosen by your mail provider. Copy s= from a DKIM-Signature header on a sent message.

Can DNSFetch change my DNS?

No. It only reads public records. Changes happen at your DNS host or registrar.

Do you log the domains I search?

Queries are cached for a few minutes and web servers keep ordinary access logs. We do not publish a search history. See the Privacy Policy.

Why did I get a 429 error?

You exceeded the per-IP rate limit (about 20 lookups per minute). Wait a minute. Automated scraping is not allowed.

Does this tool work for IPv6?

Yes. Use AAAA for forward IPv6 and the reverse DNS tool for PTR on IPv6 addresses.

How do I check nameservers?

Use the NS lookup tool. The result must match the provider whose DNS panel you are editing, or your changes will never be visible.

Still stuck? Read common DNS errors or contact us.