How to use
- 1Enter a domain or subdomain (e.g. example.com or mail.example.com).
- 2Pick a record type, or ALL to query the main types in parallel.
- 3Read the results with each record’s value and TTL.
What each record type does
A points a name to an IPv4 address, AAAA to an IPv6 address. CNAME makes one name an alias of another (not allowed at the bare domain apex). MX lists the mail servers that receive email for the domain, with priorities — lower numbers are tried first. NS names the authoritative nameservers. TXT holds verification strings and email authentication (SPF, DKIM, DMARC). SOA holds zone metadata like the primary nameserver and serial number. CAA restricts which certificate authorities may issue SSL certificates for the domain.
Fresh answers, not your cached ones
Queries go straight from your browser to Cloudflare’s public resolver (1.1.1.1) over DNS-over-HTTPS, bypassing your ISP’s resolver and your computer’s cache. That makes it a quick way to see whether a change you just made is visible on the public internet.
DNS propagation and TTL
There is no real “propagation”: resolvers worldwide cache each record for its TTL (time to live, in seconds) and only re-fetch when it expires. A record with TTL 3600 can take up to an hour to update everywhere; nameserver changes at the registry can take up to 24–48 hours. Before a planned migration, lower the TTL to 300 a day in advance, make the change, then raise it again.
Frequently asked questions
Why do I see the old IP after changing DNS?
Resolvers are still serving the cached record until its TTL expires. Wait for the TTL, flush your local DNS cache, and confirm here that the public resolver returns the new value.
Why is there no result for a record type?
The domain simply has no record of that type, or the name doesn’t exist (NXDOMAIN). For example, many domains have no AAAA or CAA records.
Can I put a CNAME on my root domain?
Not by the DNS standard, because the apex must hold SOA and NS records. Many DNS providers offer CNAME flattening or ALIAS/ANAME records as a workaround.
Which DNS server does this use?
Cloudflare’s public resolver via DNS-over-HTTPS, queried directly from your browser.
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