# whoisy.online

> Free, fast, privacy-first network diagnostic tools, domain & SEO intelligence, developer utilities, and curated VPN/proxy endpoints with zero tracking and no account required.

whoisy.online provides instant, client-side and serverless utilities for developers, system administrators, network engineers, and privacy advocates worldwide. All tools are built for speed, work seamlessly on mobile and desktop, and operate without tracking cookies or user registration.

## Core Hubs & Categories

- [Home Hub](https://whoisy.online/): Central search and directory of all available network, SEO, proxy, and developer utilities.
- [VPN & Proxies Hub](https://whoisy.online/proxies): Curated, continuously tested Telegram MTProto proxies, V2Ray configurations, and Cloudflare Warp+ license keys.
- [Network Tools Hub](https://whoisy.online/tools/network): Live latency, IP discovery, WHOIS registries, DNS records, and connectivity tests.
- [SEO & Web Tools Hub](https://whoisy.online/tools/seo): Domain age calculation, XML sitemap validation, robots.txt generation, and HTTP header audits.
- [Developer Tools Hub](https://whoisy.online/tools/dev): Encoding, encryption hashes, JSON formatters, text diff checkers, and permission calculators.

## Network & Connectivity Tools

- [WHOIS Lookup](https://whoisy.online/tools/whois): Query authoritative RDAP and WHOIS registries for registrar details, creation dates, DNS servers, and registration status.
- [My IP Address](https://whoisy.online/tools/my-ip): Instant public IPv4 and IPv6 detection with ISP, ASN, city, region, coordinates, and timezone lookup.
- [IP Geolocation Lookup](https://whoisy.online/tools/ip-lookup): Detailed IP address intelligence, Autonomous System Number (ASN), ISP organization, and interactive geographic coordinates.
- [Ping & Uptime Checker](https://whoisy.online/tools/ping): Real-time ICMP/HTTP server latency and round-trip time (RTT) measurement.
- [WebRTC Leak Test](https://whoisy.online/tools/webrtc-leak-test): Scan browser STUN/ICE candidates to detect whether local or public IPs are leaking outside VPN or proxy tunnels.
- [DNS Lookup](https://whoisy.online/tools/dns-lookup): Resolve A, AAAA, MX, TXT, NS, CNAME, SOA, and PTR records across public DNS resolvers.
- [Reverse DNS (rDNS)](https://whoisy.online/tools/reverse-dns): Resolve IP addresses back to their associated Fully Qualified Domain Name (FQDN) via PTR records.
- [HTTP Status Code Checker](https://whoisy.online/tools/http-status): Audit HTTP response status codes, redirect chains (301/302), and server header metadata.
- [IP & Domain Blacklist Checker](https://whoisy.online/tools/blacklist-check): Query major DNSBL and RBL anti-spam blacklists to check server reputation and deliverability.
- [Internet Speed Test](https://whoisy.online/tools/speedtest): Measure browser download bandwidth, upload bandwidth, latency, and jitter directly with zero plugins.
- [Subnet Calculator](https://whoisy.online/tools/subnet-calculator): IPv4 CIDR notation subnet calculation, network masks, broadcast addresses, and usable host ranges.
- [MAC Address Lookup](https://whoisy.online/tools/mac-lookup): Identify hardware vendor and manufacturer details from IEEE Organizationally Unique Identifiers (OUI).

## SEO & Domain Intelligence Tools

- [Domain Age Checker](https://whoisy.online/tools/domain-age-checker): Calculate domain age in years, months, and days, registration dates, expiration timelines, renewal risks, and historical Wayback Machine snapshots.
- [Sitemap Checker](https://whoisy.online/tools/sitemap-checker): Comprehensive XML sitemap validator and hierarchy parser. Inspects sitemap index trees, URL sets, images, videos, hreflang alternates, lastmod freshness, and checks against the 50,000 URL / 50MB protocol limits.
- [Robots.txt Generator & Validator](https://whoisy.online/tools/robots-txt-generator): Generate, configure, and validate robots.txt crawling directives for search engines and AI user-agents.
- [Subdomain Finder](https://whoisy.online/tools/subdomain-finder): Enumerate subdomains via public Certificate Transparency (CT) logs and DNS reconnaissance.
- [SSL / TLS Certificate Checker](https://whoisy.online/tools/ssl): Verify SSL/TLS certificates, cipher suites, expiration dates, validity chains, and certificate authority (CA) issuers.

## Developer & Utility Tools

- [Base64 & Hash Encoder/Decoder](https://whoisy.online/tools/base64-hash): Convert between text and Base64, and generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes.
- [JSON Formatter & Validator](https://whoisy.online/tools/json): Format, prettify, minify, and validate JSON syntax with collapsible trees and syntax highlighting.
- [Password Generator](https://whoisy.online/tools/password-generator): Generate cryptographically secure random passwords and passphrases with entropy scores.
- [QR Code Generator](https://whoisy.online/tools/qr-generator): Create custom QR codes for URLs, WiFi networks, text, and crypto wallet addresses.
- [URL Shortener](https://whoisy.online/tools/url-shortener): Fast, lightweight link shortening with clean redirects.
- [Text Diff Checker](https://whoisy.online/tools/text-diff-checker): Visual side-by-side and inline difference viewer for text and source code.
- [Chmod Permissions Calculator](https://whoisy.online/tools/chmod-calculator): Visual Unix/Linux file permission calculator with octal and symbolic notations.
- [Punycode / IDN Converter](https://whoisy.online/tools/punycode-converter): Encode and decode Internationalized Domain Names (IDN) with non-ASCII or UTF-8 characters.

## VPN & Proxy Directory

- [Telegram MTProto Proxies](https://whoisy.online/proxies/mtproto): Community-tested, live-checked MTProto and Fake-TLS proxies for Telegram. Direct one-tap connection with zero configuration.
- [V2Ray & Xray Node Directory](https://whoisy.online/proxies/v2ray): Free V2Ray, VLESS, VMess, and Trojan subscription nodes ranked by live latency.
- [Cloudflare Warp+ Keys](https://whoisy.online/proxies/warp-keys): Free active 1.1.1.1 Warp+ multi-terabyte license keys refreshed regularly.
- [Reality SNI Checker](https://whoisy.online/proxies/reality-checker): Diagnostic tool for testing Server Name Indication (SNI) endpoints and TLS handshakes.

## Technical Details

- Architecture: Next.js App Router, TypeScript, Tailwind CSS, Cloudflare Edge / Node.js runtime.
- Internationalization: English (`/`), Persian (`/fa`), Russian (`/ru`), and Chinese (`/zh`).
- Privacy: No user tracking, no session recording, transient API lookups without permanent query logs.
- Canonical URL: https://whoisy.online