Validate DNS record syntax for A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, and PTR records. Checks IP format for A/AAAA records and domain validity for MX records. Everything runs locally in your browser — nothing is uploaded.
Perform DNS lookups for A, AAAA, CNAME, MX, TXT, and NS records. Everything runs locally in your browser — nothing is uploaded.
Validate robots.txt syntax — checks User-agent, Allow, Disallow, Sitemap, Crawl-delay directives. Identifies unknown directives, missing colons, and missing User-agent declarations.
Validate docker-compose.yml files — checks YAML syntax, correct indentation, tab usage, and the presence of the services section. Identifies mixed indentation and formatting issues.
Produces a robots.txt file from a point-and-click form where you set allowed and disallowed paths, crawl delays, and sitemap references. Everything runs locally in your browser — nothing is uploaded.
Validates Aadhaar numbers using Verhoeff checksum verification. Checks format rules, detects fake UIDs, and explains Aadhaar number structure. Fully local validation with no data upload.
DNS Record Validator lets you validate DNS record syntax for A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, and PTR records. Checks IP format for A/AAAA records and domain validity for MX records. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Validate DNS record syntax for A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, and PTR records. Checks IP format for A/AAAA records and domain validity for MX records. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Enter a URL, domain name, or IP address.
Yes. After the initial page load, DNS Record Validator runs entirely on your device with no internet connection needed. All processing is done locally.
Validate DNS record syntax for A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, and PTR records. Checks IP format for A/AAAA records and domain validity for MX records. All processing runs locally — no code is sent to any server.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check the tool description for specifics.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. Formatters use well-known libraries (sql-formatter, Prettier-compatible patterns) and follow widely adopted rules.
DNS Lookup Generator
Perform DNS lookups for A, AAAA, CNAME, MX, TXT, and NS records. Everything runs locally in your browser — nothing is uploaded.
Subdomain Finder
Discover subdomains for a given domain using common wordlists and patterns. Everything runs locally in your browser — nothing is uploaded.