AVAILABLE
WHOIS / RDAP Lookup
Explore domain registrar, registration events, and name servers when publicly available.
✳YOUR INTERNET TOOLKIT
Know what's behind every domain.
Explore domain registration, DNS records, and IP information with a suite of free, straightforward internet tools.
♧No account required. Public data, responsibly used.Try:
DNS Health Report
Check nameservers, SOA, mail routing, SPF, DMARC, CAA, DNSSEC signals and common configuration issues.
Recent searches
Your recent lookups will appear here on this device.
Simple tools. Useful answers. No clutter.✦ ✦ ✦ ✦ ✦
⌁Instant accessNo sign-up needed
◈Useful dataPublic records & lookups
↗Made for everyoneClear, simple results
⌘Free to useEveryday web utilities
✳EXPLORE THE TOOLBOX
Everything you need to look deeper.
Practical utilities for domain owners, developers, and curious internet users.
AVAILABLE
DNS Record Lookup
Inspect A, AAAA, MX, TXT, NS and CNAME records for a domain.
AVAILABLE
IP Address Lookup
Explore public IP details, network provider, and approximate location.
PLANNED
HTTP Header Checker
Learn how websites respond and inspect common response headers.
Request this tool ↗PLANNED
SSL Certificate Checker
Understand HTTPS certificates, expiry dates, and encryption basics.
Request this tool ↗PLANNED
Port & Network Guide
A friendly reference to common ports, protocols, and network terms.
Request this tool ↗✳BUILT TO BE STRAIGHTFORWARD
Answers without the guesswork.
Troubleshoot a website, research a domain, or learn how the internet works. Start with a name and explore public data.
- A clean, easy-to-understand interface
- Helpful explanations for common records
- Works on desktop, tablet, and mobile
◎example.comDomain overview · illustrative preview
Lookup typeDomain RDAP
Data sourcePublic registry data
AvailabilityLive query
Actual data depends on the registry response.✳GOOD TO KNOW
Frequently asked questions.
Quick answers to help you get more from these tools.
What is a WHOIS lookup?+
A WHOIS/RDAP lookup can show public domain registration data, such as registrar, registration dates, and name servers. Privacy rules may hide some fields.
Is this domain lookup free?+
Yes, these browser-based tools are free to use. Public service availability, rate limits, and registry coverage can vary.
Why is some domain information missing?+
Registries publish different data, and privacy protections may redact personal details. A missing result does not necessarily mean a domain is unregistered.
What can DNS records tell me?+
A records map names to IPv4 addresses, AAAA to IPv6, MX routes email, and TXT can contain verification and email-security settings.
Are results always real-time?+
Lookups query external public services when requested. Caching, DNS propagation, rate limits, and provider availability can affect results.
Curiosity is a good place to start.
Look up a domain, explore its DNS, and learn something new about the web.
Explore the tools →✳ABOUT THIS PROJECT
A more approachable internet.
Whois by PDFKaj is an independent toolkit for exploring domain and network information. Results are supplied by third-party services. This site is not affiliated with ICANN, registries, or any registrar.