Get to know
your digital world.
Create a QR code, find your IP address or inspect your website’s DNS and HTTPS details. Handle everyday digital tasks in one place. Simple, fast and free.
Whatever makes you curious.
Find an answer or create a QR code. Choose the tool for your task.
My IP address
Your public IP address, approximate location and network provider.
QR code generator
Create static QR codes for URLs, contacts, Wi-Fi, phone, email and text.
DNS lookup
Look up a domain’s IP, email and verification records.
Browser fingerprint
Inspect device signals and a locally generated fingerprint summary.
IP blacklist check
Check your mail server IP against SpamCop and PSBL.
SSL & HTTPS check
Inspect HTTPS, HSTS, redirects and certificate log information.
Browser information
Explore your browser, operating system, language and hardware signals.
Screen information
See your resolution, pixel density and viewport size update live.
Connection information
Inspect HTTP, TLS and your edge connection in one place.
HTTP headers
Read your browser’s request headers and learn what they mean.
Subnet calculator
Calculate IPv4, CIDR, subnet masks and host ranges instantly.
It doesn’t have to be technical.
What does an IP address reveal? How does DNS work? Why does HTTPS matter? Understand the story behind the numbers and abbreviations.
A few things worth reading.
Public vs Private IP Addresses: Differences and How to Find Yours
Understand public and private IPs, IPv4 and IPv6, routers and VPNs. Learn which address websites see and what it can reveal.
How to Create a Wi-Fi QR Code: A Practical Sharing Guide
Create a Wi-Fi QR code using your network name and password. Learn about guest networks, printing, scanning and password changes.
What Is Browser Fingerprinting? What Websites Can See
Learn how browser version, screen and device signals combine, how fingerprinting differs from cookies and what private browsing can change.
How to Create a QR Code: A Step-by-Step Guide
Learn to create static QR codes for URLs, contacts, Wi-Fi, phone and email. Customize colors and logos, export and test before printing.
What does your IP address reveal?
Understand public and private IP addresses, approximate location and VPNs.
Reading DNS records: from A to TXT.
A practical introduction to DNS records for website and email troubleshooting.