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Everything runs in your browser — nothing is sent to a server. Leak checks, generators, calculators. The list grows every month.
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Blocking mapwhat is blocked by countryblocking-map Speed testdownload, ping, jitter · 7 sspeed-test Wallet addressnetwork and checksumwallet-check Seed phraseBIP-39 generator and checkseed-phrase Payment QRaddress and amount in one codecrypto-qr Satoshi and weiunits and gas feecrypto-units Is my VPN workingIP · WebRTC · IPv6 · time zonevpn-check What is my IPaddress, country, ISPwhat-is-my-ip Whose IP is thisprovider and ASN by addressip-lookup WebRTC leakreal IP around the VPNwebrtc-leak-test IPv6 leakIPv6 outside the tunnelipv6-leak-test UDP block testwill WireGuard get throughudp-block-test Browser privacywhat sites know about youprivacy-checker What is blockedwhich services do not open hereblocked-services-test What is blocked here18 services: open, slow, silentservice-block-test Password leak checkagainst breach lists, password never sentpassword-leak-check Password generatorlength, symbols, entropypassword-generator WireGuard configkeys, PresharedKey, QR codewireguard-config-generator Node link parservless · vmess · trojan · ssnode-link-parser QR code from a linklink, text or Wi-Fi → QRqr-generator Link cleaner and UTMstrip utm, fbclid and tagslink-cleaner Mbps to MB/sconversion and download timespeed-units CIDR subnetsmask, range, hostssubnet-calculator Data usagehow many GB per monthdata-usage-calculator Call costcarrier minutes vs a subscriptioncall-cost-calculator
DNS leakin progress
Is port open?in progress
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Telegram bot

Key, renewal and subscription status right in the chat. It reminds you when to renew.

Open @api404_bot