DNS Record Lookup

These tools answer what DNS says about a name. Look up the IP addresses of a host, follow an alias chain, read TXT records, find the PTR name of an IP address or ask several public resolvers the same question side by side. DNS Record Types explains the common record types and can look one up live.

Tools in this group

• A Record Lookup — Type a domain or host name to see its IPv4 and IPv6 addresses, with the alias chain and TTLs.
• CNAME Lookup — Type a host name to follow its CNAME (alias) chain to the final name and IP addresses.
• CNAME vs A Record: Which Does Your Name Use? — Look up a host name to see whether it uses a CNAME or A records, then compare how the two behave.
• DNS Propagation Checker — Enter a name and record type to see how several public resolvers answer right now, side by side.
• DNS Record Types — Browse the common DNS record types with examples, then look one up live for any domain.
• Reverse DNS Lookup (rDNS Check) — Type an IPv4 or IPv6 address to see its PTR host name and whether forward and reverse DNS match.
• TXT Record Lookup — Type a domain to see its TXT records, with SPF, DMARC and verification records labelled.
• What Is TTL in DNS? Check Any Domain's TTL — Look up a domain to see the TTL of each record in seconds and in words, and what it means for caching and changes.