Calculator
What the DNS Lookup Tool does
DNS Lookup Tool: calculates Status, DNS answers and Tip from Domain and Record type.
Give the DNS Lookup Tool your Domain and Record type and it works out Status, DNS answers and Tip. Press the button when your inputs are ready and the result appears below.
Most people who open the DNS Lookup Tool are engineers checking an encoding. Pasting a production payload into an unknown web tool is a real risk, which is why this one stays local.
This runs client-side, which means we never receive what you enter and could not retrieve it if asked.
The field table, the method and a worked example are documented after the tool for anyone who wants to check the working.
What do the DNS Lookup Tool fields mean?
The DNS Lookup Tool uses 2 inputs. A filled form means you can test one idea immediately instead of sourcing every input first.
| Field | What to enter | Default |
|---|---|---|
| Domain | required | example.com |
| Record type | choose from A, AAAA, MX, TXT, NS or CNAME | A |
How does the DNS Lookup Tool work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same calculation.
Validation runs before the calculation, which is why a mistyped value shows an error rather than a plausible-looking result.
What a typical run looks like
You provide: Domain and Record type
What happens: the file is read into memory by your browser, processed locally, and offered back as a download. It is never uploaded.
You get back: a new file plus a brief account of what happened to it, shown in the panel.
How long this takes is a property of your computer, not of our infrastructure, and file size is bounded by browser memory.
How to use it
- Set Domain.
- Pick a value for Record type: the options are A, AAAA, MX, TXT, NS or CNAME.
- Press Lookup DNS.
- Check Status, DNS answers and Tip on the right.
- Copy Link when you want to return to this exact configuration; Print when someone needs it on paper.
What this tool does not do
- Processing happens in your browser, so extremely large inputs are bounded by available memory.
- Output follows the common convention for this format; a specific toolchain may have its own house style.
- No allowance is made for local rules, regional variations or house conventions.
Frequently asked questions
Domain and Record type. That is the whole form. Every box already holds a working value, so nothing is mandatory before you see a result.
No record is kept. We never receive what you type, so there is nothing on our side to retain.
No charge. Everything on the page is available without signing in.
It follows the standard definition for this operation, so the result matches what a reference implementation would give.