Free Privacy & Security Tools
30+ free tools to check, analyse, and protect your online identity, email setup, and websites.
IP & Network Intelligence
Look up any IP address, domain, or hostname - Reveal location, ISP, ASN, and DNS records.
Security & Threat Analysis
Detect blacklisted IPs, open ports, expired certificates, data breaches, and proxy / VPN usage.
Website & Email Operations
Audit email authentication, crawl public websites, generate XML sitemaps, find broken links, inspect IP lists, and check uptime.
Network Utilities
Calculate subnets, check internet speed, look up phone numbers, and inspect browser fingerprints.
Password & Security Generators
Generate cryptographically random passwords, PINs, and test password strength - All processed client-side.
Privacy Guides
In-depth guides on hiding your IP, choosing a VPN, and staying anonymous online.
Common Use Cases
Many of these tools work best in combination. Here are the most common workflows:
Investigate a suspicious IP address
Run an IP lookup to see location and ISP, then check the blacklist checker to see if it is flagged for spam or abuse. Follow with a proxy check to determine if it is a VPN or exit node, and a port scan to see what services are exposed.
Audit a domain before connecting
Use WHOIS to check registration age and registrar, DNS lookup to inspect SPF, DKIM, and MX records, SSL check to verify the certificate is valid and not expired, and HTTP headers to review security headers like HSTS and CSP.
Verify your VPN is actually working
Connect your VPN, then run the VPN leak test to check for WebRTC and DNS leaks. Follow with the home page IP check to confirm the IP shown is the VPN server, not your real address. Use proxy check to see how the IP is classified.
Trace where a spam email came from
Paste the full email headers into the email header tracer to extract the origin IP. Run that IP through the blacklist checker and WHOIS to identify the sending organisation's abuse contact.
Why Use These Tools?
Every time you connect to the internet your IP address and browser reveal more than most people realise. These tools help you see exactly what is visible - And fix it.
See What Others See
Your IP address exposes your approximate location, ISP, and whether you are behind a VPN or proxy. Run an IP lookup to see exactly what every website and server you connect to already knows about you.
Run IP lookup →Check for Known Threats
Blacklists are maintained by organisations like Spamhaus and SORBS to flag IP addresses associated with spam, malware, and abuse. If your IP is listed, emails you send may be rejected and some sites may block you.
Check your IP →Protect Your Accounts
Data breaches expose billions of email addresses and passwords each year. Checking whether your email has appeared in a known breach takes seconds and lets you act before an attacker does.
Check for breaches →Questions about Tools
Are all of these tools completely free?
Yes. Every tool on this page is free to use. Most tools do not require an account at all. A free account is required only for tools that involve server-side execution at scale (such as the port scanner and blacklist check) to prevent automated abuse. Creating an account takes under 60 seconds and requires no credit card.
Do these tools store my IP address or search history?
Anonymous tool analytics do not retain your IP address in the application database. Signed-in tool activity can appear in your account history. Infrastructure security logs are handled separately. We do not sell your data. See our Privacy Policy for full details.
How accurate is the IP geolocation?
IP geolocation is typically accurate to the city level but not the street or building level. Accuracy varies by ISP and region - It is usually within 25-50 miles for residential IPs. Corporate and VPN IPs may show the data centre location rather than your actual location. For a detailed explanation, see our guide on IP geolocation accuracy.
What is the difference between a blacklist check and a breach check?
They check different types of threat intelligence:
- A blacklist check queries DNS-based block lists (DNSBLs) to see if an IP address is flagged for sending spam, hosting malware, or conducting abuse. It affects email deliverability and access to some services.
- A breach check queries databases of known data breaches to see if an email address and its associated password appeared in a leaked dataset. It affects account security.
Can I use these tools to check someone else's IP address?
Most tools accept any publicly routable IP address or domain, not just your own. This is useful for IT administrators verifying server configurations, security researchers investigating threats, or anyone checking a domain before interacting with it. Automated or bulk use of these tools is not permitted - See our Terms of Service.
Why does my IP show a different city than where I am?
ISPs often route traffic through regional hubs that may be hundreds of miles from your physical location. The IP is registered to the ISP's point of presence, not your home. If you are using a VPN, the location shown will be the VPN server's data centre. Mobile carrier IPs frequently show a capital city rather than your actual location because carriers route all mobile traffic centrally.