DNS Lookup
Query common DNS record types for domains and perform reverse DNS lookups for IP addresses.
DNS record lookup
Query public DNS information for a domain name or IP address.
DNS query
Selected record
A
IPv4 addresses
International domains
Unicode domains such as bücher.de are automatically converted to their ASCII Punycode form before lookup.
Lookup result
Enter a DNS query
DNS records, priorities, TTL values, and lookup details will appear here.
Domain Name System
Inspect the records that control domain routing and verification
DNS records connect domain names to web servers, mail systems, certificate policies, verification services, and other internet infrastructure.
Troubleshoot configuration
Verify whether a domain resolves to the expected IP address, mail provider, authoritative name server, verification record, or canonical alias.
Review security records
TXT and CAA records can reveal email authentication, domain ownership verification, certificate authority restrictions, and other security-related configuration.
Guide
About DNS Lookup Tool
The Domain Name System maps names to addresses and publishes routing, mail, verification, and policy information.
This tool queries common DNS record types and supports reverse lookups for IP addresses.
DNS responses can vary by resolver, cache state, geography, and propagation timing.
Supported DNS records
Use the appropriate record type for the information you need.
- A and AAAA addresses
- CNAME aliases
- MX mail routing
- NS authoritative servers
- TXT verification and email policy
- SOA, CAA, and PTR records
Troubleshooting DNS
Check whether a domain resolves to expected services and whether recent changes have propagated.
Security-related records
TXT records can contain SPF, DKIM-related data, and verification tokens, while CAA restricts which CAs may issue certificates.
Server-side behavior
DNS queries are performed by the application server, so results may differ from your local resolver.
FAQ
Frequently asked questions
What is an A record?
An A record maps a hostname to an IPv4 address.
What is an AAAA record?
An AAAA record maps a hostname to an IPv6 address.
What is a PTR record?
A PTR record supports reverse DNS by mapping an IP address back to a hostname.
Why do DNS results differ between resolvers?
Resolvers may have different caches, policies, network paths, or propagation timing.
What does a CAA record do?
CAA records identify certificate authorities authorized to issue certificates for a domain.
Are lookups performed locally?
No. DNS lookups require server-side network access.
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