Free DNS Lookup Tool

A records map a name to IPv4 addresses; AAAA records map it to IPv6 addresses. CNAME records alias one name to another. MX records identify incoming mail servers and include priorities. TXT records hold text such as SPF policies and service-verification tokens. NS records identify nameservers, while CAA records restrict which certificate authorities may issue certificates.

A record type can be absent without the domain being broken. A website that only uses IPv4 may have no AAAA record, and a name used only for email may have no A record.

TTL means Time to Live: the number of seconds a resolver may cache an answer. A recursive resolver can return its cached value until that period expires. Lowering a TTL does not shorten the lifetime of a copy that was already cached under the previous TTL.

This lookup is a snapshot from one resolver service. Geo-based DNS and load balancing can legitimately return different addresses to different queries. Use the propagation checker for a comparison and verify the expected values with your DNS provider.

For a website migration, compare A, AAAA, and CNAME answers with the destination your host expects. For email setup, check MX and TXT records and use the dedicated SPF and DMARC tools to interpret those policies.

A DNS record being present does not prove that a website is reachable, that a certificate is valid, or that email passes authentication. Each of those requires a separate check.