Domain Validator
Validate domain name format. Check syntax, TLD, and length requirements.
This tool is coming soon. Check back later!
How to Use Domain Validator
- Enter a domain name
- See if syntax is valid
- Check TLD against known list
- View any validation errors
About Domain Validator
Validate domain name syntax and format. Checks label lengths, total length, valid characters, and TLD validity. Supports internationalized domain names (IDN) with Punycode.
Frequently Asked Questions
Does this check if the domain is available?
No, this validates format only. Domain availability requires checking with registrars.
What are the length limits?
Each label (part between dots) can be 63 characters max. Total domain length is 253 characters max.
Are new TLDs supported?
Yes, we validate against the current IANA TLD list, including new gTLDs like .app, .dev, .io.