DNS Checker
DNS Checker
Query DNS records from multiple resolvers to validate propagation, record types, and misconfigurations.
Frequently Asked Questions
What is a DNS Checker?
A DNS Checker is a tool that allows you to query DNS records from multiple DNS resolvers around the world. This helps you verify DNS propagation, identify misconfigurations, and ensure your domain's DNS records are correctly set up across different geographic locations.
Why should I use multiple DNS resolvers to check DNS records?
DNS changes don't propagate instantly to all DNS servers worldwide. Different ISPs and DNS providers cache records for different durations. By checking from multiple resolvers, you can see exactly which locations have received your DNS updates and which are still showing old records, helping you troubleshoot propagation delays.
Common DNS Record Types
- A: Maps a domain to an IPv4 address
- AAAA: Maps a domain to an IPv6 address
- CNAME: Aliases one domain name to another
- NS: Specifies authoritative name servers for the domain
- MX: Directs email to mail servers
- TXT: Holds human-readable or machine-readable text data
- SRV: Specifies service location (host and port) for specific services
- PTR: Reverse DNS lookup - maps an IP address to a domain name
- SOA: Contains administrative information about the DNS zone