DNS lookup is an Astrina tool for website security and configuration. A, AAAA, MX, NS, TXT, SOA and CAA. It performs a live network query — DNS, WHOIS or TLS — and returns real-time results.
How to use DNS lookup
- Enter the domain or IP address.
- Click "Run the check."
- Review the live network data.
- Use the results to diagnose or verify your configuration.
What DNS lookup is used for
Professionals working in website security and configuration use this tool to save time and catch errors before they become problems. Common use cases:
- Auditing and quality checks in website security and configuration
- Validating or converting output before deploying
- Debugging issues quickly without switching between multiple tools
- Generating boilerplate output to speed up development
Key features
- Fast: server-side analysis in seconds
- Free for most use cases — no account required for the majority of checks
- Accurate: uses the same techniques as professional SEO and security scanners
- Privacy-friendly: we do not store the content we analyse beyond the session
About this tool
This is part of Astrina's suite of 12 website security and configuration tools. All tools are available at astrina.io/utilities.
Frequently asked questions
Is DNS lookup free?
The tool is free to use for basic runs. Daily limits apply for server-side tools without an account; a free account raises those limits.
Do I need an Astrina account?
For most checks, no account is needed. An account is required for higher usage limits or paid features.
Can I use DNS lookup through the API?
Yes. This tool is available through the Astrina REST API with your API key. See /api/ for documentation.
How accurate is DNS lookup?
The tool uses the same techniques as professional SEO and security scanners. Results reflect what search engines and browsers actually see.
Try the DNS lookup now — no account required for most checks, and the result is ready in seconds.
