DNS, IP, and network utilities
Look up IP address information including location and ISP
Query DNS records including A, AAAA, MX, TXT, and more
Look up domain registration and ownership information
Check HTTP status codes and response headers for any URL
Check SSL certificate details, expiry, and validity for any domain
Complete reference guide for common network ports and their services
Free email validator — check if an email address is valid by verifying format, MX DNS records, and detecting disposable or temporary email providers. Bulk validation supported. No sign-up required.
Look up the geographic location, ISP, and timezone of any IP address
Fetch and download favicons in all sizes from any website domain
Extract all internal and external links from any webpage URL
Paste raw email headers to visualize the delivery hop chain, check SPF/DKIM/DMARC results, and inspect X- fields — instantly, no upload needed
Expand shortened URLs and reveal the full redirect chain — see every hop, status code, and final destination before you click
Measure your latency to Cloudflare, Google, AWS CloudFront, Fastly, jsDelivr, and more — ranked by speed
Instantly see your public IPv4 and IPv6 address with geolocation — city, country, ISP, timezone, and map link
Test your internet download and upload speed, latency, and jitter — powered by Cloudflare's global edge network
Check if TCP ports are open on any host or IP address — supports multiple ports at once with latency measurement
Check if your browser leaks your real IP address via WebRTC — even behind a VPN or proxy
Look up the device vendor and manufacturer from any MAC address OUI — supports all formats (colon, dash, Cisco dot, raw hex). Batch lookup up to 10 MACs.
Calculate IPv6 network ranges, compressed and expanded addresses, prefix details, subnet sizes, and reverse DNS notation
Capture a full-page screenshot of any website and download it as PNG