Frequently Asked Questions
What is a DNS A record?
An A record maps a domain name to an IPv4 address (e.g. 104.21.1.1). It's the most common DNS record type and is what browsers use to find the web server for a domain.
What is a CNAME record?
A CNAME (Canonical Name) record points a domain to another domain rather than an IP address. For example, www.example.com might CNAME to example.com, or to a CDN like mysite.cdn.cloudflare.com.
What is an MX record?
MX (Mail Exchanger) records specify which servers handle email for a domain. They include a priority value — lower numbers have higher priority. Multiple MX records provide redundancy.
What is a TXT record used for?
TXT records store arbitrary text data. They're used for email authentication (SPF, DKIM, DMARC), domain verification for Google/Microsoft/GitHub, and other ownership-proof requirements.
What is TTL?
TTL (Time To Live) is how long DNS resolvers cache a record in seconds. A TTL of 300 means the record is cached for 5 minutes before being re-queried. Lower TTLs give more flexibility for changes; higher TTLs improve performance.
Why might results differ from other DNS tools?
Different DNS resolvers can cache records differently. Cloudflare's 1.1.1.1 may show different TTL values than Google's 8.8.8.8 if one queried a record more recently. Propagation also means new records may show up at different times globally.