Free Internet & Network Diagnostic Tools
Essential network diagnostics, cybersecurity checks, and web performance utilities for developers, webmasters, and everyday users.
What Is My IP Address
Detect your public IPv4 and IPv6 addresses, ISP, location, and connection details.
IP Lookup
Geolocate and inspect any public IP address, ISP, ASN, and network organization.
DNS Lookup
Query authoritative A, AAAA, MX, CNAME, TXT, NS, and SOA DNS records for any domain.
Global DNS Checker
Verify DNS record propagation across multiple international DNS resolvers.
HTTP Status Checker
Test URL response codes (200, 301, 404, 500), headers, and redirect chains.
URL Parser & Query Inspector
Break down complex URLs into protocol, host, path, hash, and query parameters.
URL Shortener
Create clean, concise short links with companion QR codes for easy sharing.
URL Expander
Unmask shortened links (bit.ly, t.co, tinyurl) and trace full redirect destinations safely.
User Agent Checker
Identify your browser, operating system, rendering engine, and device screen specs.
Website Screenshot
Capture high-resolution website screenshots across desktop, tablet, and mobile viewports.
Website Meta Tag Checker
Audit SEO title, description, OpenGraph tags, and preview Google and social search cards.
SSL Certificate Checker
Inspect TLS/SSL certificate expiration dates, issuer authority, SAN domains, and cipher suites.
Website Response Time Checker
Measure website TTFB (Time to First Byte), DNS lookup, connection latency, and HTTP speed.
Internet Speed Test
Measure real download speed, upload bandwidth, latency (ping), and jitter in Mbps.
Ping Test
Test network round-trip latency, jitter, and packet loss to servers worldwide.