DNS WHOIS analyzer
DNS & WHOIS Checker
Check DNS entries and WHOIS information of domains - ideal for webmasters and IT professionals.
How to analyze a domain
With this professional tool, you can perform comprehensive DNS analysis and WHOIS queries for any domains. The checker provides detailed insights into DNS records, email security configurations, and domain registration data with an integrated health check system. Follow these simple steps:
Enter domain
Enter the domain to check (e.g., example.com). The tool accepts main and subdomains and automatically removes protocol prefixes.
Analyze DNS records
After the query, you get a complete overview of all DNS entries: A-records (IPv4), AAAA-records (IPv6), MX-records (email), NS-records (nameservers), CNAME-records (aliases), and more.
Check email security
The tool automatically analyzes SPF, DMARC, and TXT records to evaluate email security configuration and shows potential vulnerabilities.
Retrieve WHOIS information
Get detailed registration data such as registrar, creation and expiration date, nameservers, and administrative contacts (as far as publicly available).
Activate expert mode
Enable expert mode to display additional technical details such as TTL values, extended metadata, and deeper DNS information.
Use health check
The integrated health check system automatically evaluates DNS configuration and provides recommendations for improvements in categories such as website accessibility, email functionality, and security.
Export results
Copy individual DNS records or complete configurations with the integrated copy function for further use.
Understand interpretation
Use the color-coded ratings (green = optimal, yellow = improvement possible, red = critical problem) and detailed explanations for each configuration.
FAQ DNS WHOIS Analyzer
1. What is the DNS WHOIS Checker and what is it used for?
The DNS WHOIS Checker is a plugin that allows you to check DNS records and WHOIS information for a domain. It is ideal for webmasters and IT professionals to analyze the configuration of a domain and troubleshoot issues.
2. What information does the DNS WHOIS Checker provide?
The DNS WHOIS Checker provides information about DNS records such as A, AAAA, MX, NS, CNAME, SOA, and CAA records. It also displays WHOIS information such as domain owner, registrar, creation date, and expiration date.
3. What do the different DNS records (A, MX, NS, etc.) mean?
- A Record: Connects a domain to an IPv4 address.
- AAAA Record: Connects a domain to an IPv6 address.
- MX Record: Determines the mail servers for a domain.
- NS Record: Defines the name servers for a domain.
- CNAME Record: Creates an alias for a subdomain.
- SOA Record: Contains administrative information about the DNS zone.
- CAA Record: Specifies which certificate authorities are allowed to issue SSL certificates.
4. What is an SPF record and why is it important?
An SPF record (Sender Policy Framework) protects your domain from email spoofing by specifying which servers are authorized to send emails on behalf of your domain. This prevents spammers from abusing your domain.
5. What is a DMARC record and how does it improve email security?
A DMARC record (Domain-based Message Authentication, Reporting and Conformance) defines how email recipients should handle messages that fail SPF or DKIM authentication checks. It helps prevent email spoofing and phishing and allows for reporting on failed delivery attempts.
6. What does the "Health Check" in the DNS WHOIS Checker mean?
The „Health Check“ analyzes the DNS configuration of your domain and provides recommendations for improving security, accessibility, and email deliverability. It identifies potential problems and shows how to fix them.