Default Wi‑Fi Password Calculator - Online ISP Router Keygen
Enter a router's MAC address or serial and generate the common default WPA passphrase for major ISP brands. Educational purpose only.
UD5 Toolkit
Enter a router's MAC address or serial and generate the common default WPA passphrase for major ISP brands. Educational purpose only.
Query DNS records for any domain directly from your browser using DNS-over-HTTPS. See A, AAAA, MX, CNAME, and TXT. No logs.
Enter a domain and see its SSL certificate details: issuer, validity dates, and chain. Client‑side fetch.
Enter a URL and follow every redirect until the final destination. Shows each hop's status code, location, and duration.
Randomly generated subnetting questions. Calculate network address, broadcast, and usable range. For CCNA prep.
Enter a website and check which security headers (HSTS, CSP, X‑Frame‑Options) are present. Get a security grade.
Enter a URL and see its CORS headers. Understand why a fetch fails. Check preflight responses. Client‑side debugger.
Check WHOIS information for any domain: registrar, expiration date, and name servers. Quick and private using public WHOIS data aggregators.
Check which cipher suites a website supports and identify weak or outdated ones. Quick security audit from your browser.
Enter a URL and see the full redirect chain with status codes and response times. Also validates against your chosen rule.
Click through the TCP connection states (LISTEN, SYN_SENT, ESTABLISHED…) and see the animated transitions. Networking education.
Send HEAD requests to popular websites and measure the round‑trip time. Quick network health check. Client‑side.
Quickly estimate your internet connection speed by downloading a small test file. See class and recommendations.
Create a temporary chat room between two browser tabs or devices on the same network using WebRTC data channels. Copy the code.
Simulate a traceroute by entering a destination IP. Learn about AS paths and latency. Does not send real packets; educational visualisation.
Validate a DNSSEC chain by entering DS and RRSIG records. Verify that signatures match. Educational. Local algorithm.
Send conditional requests to a URL and verify that the server correctly handles ETag and If‑None‑Match. Audit caching.
Bypass CORS for testing by routing requests through a local service worker proxy. Debug APIs without server changes. Experimental.
Query a domain's DNS record against multiple public resolvers (Google, Cloudflare) and see how it propagates. Client‑side fetch.
Generate a Wi‑Fi QR code with full options: WPA3, hidden network, and EAP. Download as SVG. All local.
Establish a peer‑to‑peer text chat between two browser tabs or devices using WebRTC data channels. All signaling via copy‑paste. No server.
Paste any DNS record and check if its format is valid for the selected record type (A, AAAA, CNAME, MX, TXT, SRV). Prevents typos.
Create a CAA DNS record to specify which certificate authorities can issue SSL certs for your domain. Prevent mis‑issuance.
Generate a BIMI record to display your verified brand logo in email clients. Includes SVG logo URL and VMC certificate path.
Demonstrate how to add custom headers and POST‑like functionality to EventSource using a polyfill. Code and example.
Test how your page loads under slow, 3G, or offline conditions by intercepting fetch and applying delays. No DevTools needed.
Create a DMARC policy record with percentage, reporting addresses, and alignment mode. Validate and copy the final DNS TXT.
Open many parallel WebSocket connections and send messages. Test your server's concurrency. All from your browser.
Paste raw email headers and see authentication results (SPF, DKIM, DMARC) in a readable table. Find spoofing attempts.
Connect to a WebTransport server and exchange data over QUIC. See latency and throughput. Perfect for exploring low‑latency real‑time APIs.
Fetch a site’s HSTS header and validate its syntax, max‑age, and subdomain flags. Ensure your site enforce HTTPS.
Display your effective connection type (4g, 3g, etc.) and downlink speed using the Navigator API. Adapt your app accordingly.
Connect to a WebSocket endpoint, send messages, and view the stream of received data. Perfect for debugging real‑time apps.
Connect to an SSE endpoint and display events in real time. Inspect event types and data. Handy for frontend devs.
Generate a DKIM DNS record from a public key and selector. Check syntax. Improve your domain’s email deliverability.
Build a valid SPF TXT record by selecting mail servers, IPv4/IPv6 ranges, and includes. Validate syntax and get ready‑to‑publish output.
Enter an API URL and quickly check its HTTP status code and response time. See response headers and body. Browser fetch.
Estimate how long it takes to download/upload a file given bandwidth speed. Also convert between bits and bytes.
Enter an IP and CIDR prefix to visually see network address, broadcast, usable range, and subnet mask conversions.
Measure your internet connection speed by downloading and uploading a small test file. Works from your browser.
Searchable table of well‑known TCP and UDP ports with their services. Check 80, 443, 3306, and many more.
Interactive guide to crimping RJ45 connectors. See the wire order for T568A/B standards. Helpful for DIY network cables.
Attempt to detect your current DNS resolver IPs using DNS‑leak test queries. Educational. Privacy‑friendly.
Find your public IP address and view approximate geolocation, ISP, and browser header details. No personal data stored. Static and instant.
Check WHOIS information for any domain: registrar, expiration date, and name servers. Quick and private using public WHOIS data aggregators.
Generate valid, random unicast MAC addresses for testing or spoofing. Select OUI prefix if desired. Local only.
Convert network and data transfer speeds: bps, Kbps, Mbps, Gbps, KiB/s, MiB/s. A must when comparing internet plans. Fast and local.
Find out the real destination of any shortened link (bit.ly, t.co, etc.) without clicking. Resolves redirects locally using public HTTP headers.
Query DNS records for any domain directly from your browser using DNS-over-HTTPS. See A, AAAA, MX, CNAME, and TXT records. No logs.
Enter a URL and see the full HTTP response headers returned by the server. Detect redirects and server type. Useful for SEO and web debugging.
Check if a website is globally reachable or experiencing issues. Status code and latency displayed. Quick browser-side test.
Inspect any website's SSL/TLS certificate details: issuer, expiry date, subject, and SANs. Verify certificate chains. All checks are private and require no server upload.
Create a QR code that lets people connect to your Wi‑Fi without typing a password. Just scan and join. Secure local.
Paste raw email headers and get a human-readable breakdown of the delivery route, authentication results, and delays. Private analysis.