web-master-tool.com
Web Master Tool — check DNS, domains, and IPs in seconds
When a website stops loading, email fails, or nobody knows where a domain or server is managed, you need reliable public information before changing anything. Web Master Tool brings those checks together in one free browser-based collection. There is no account to create and nothing to install.
What it is
The collection checks DNS records, Whois data, domain management clues, hosting providers, and your current public IP and network information. It also includes practical browser utilities for creating QR codes, encoding and decoding URLs, converting iPhone HEIC images, and checking Google or advertising tags.
Main investigation tools
- DNS records — inspect A, AAAA, CNAME, MX, TXT, NS, and other public settings behind websites and email.
- Whois and domains — review registrar, expiration, status, and nameserver information.
- Hosting and IP information — find hosting-provider clues and check public IP, ISP, and ASN information.
- Everyday web utilities — generate QR codes, transform URLs, convert HEIC images, and check website tags.
Guides explain what the result means
A returned value is not always a complete answer. The site includes 50 Japanese guides for beginner and intermediate readers, covering terminology, safe checking order, common mistakes, and what evidence to preserve before making a change.
Why it is safe to start here
- Free and no sign-up — use the tools without creating an account or installing an app.
- Built for inspection — the tools read public information and do not silently change DNS or server settings.
- Clear limits — the guides distinguish what public data can establish from what still requires official documentation or an account dashboard.
Requirements and pricing
- Runs onAny modern browser on desktop, phone, or tablet
- Best forDNS, domain, hosting, and IP investigation; everyday web tasks
- PricingFree, no sign-up. The interface and guides are Japanese