Checker

DNS Lookup

Free online DNS lookup tool. Query DNS records for any domain including A, AAAA, MX, TXT, CNAME, NS, SOA, and PTR records. Instantly check where a domain points, find mail server records, verify TXT records for SPF, DKIM, and DMARC, and diagnose DNS propagation issues. No installation required — works directly in your browser.

IP Lookup

Look up detailed information about any IP address. Find the hostname, ISP, organization, country, and region associated with an IPv4 or IPv6 address. Useful for network diagnostics, identifying the origin of traffic, investigating suspicious connections, and verifying server configurations. Free, instant, and requires no sign-up.

Reverse IP Lookup

Perform a reverse IP lookup to find the hostname and domains associated with an IP address. Enter any IPv4 or IPv6 address to resolve its PTR record and discover what servers or websites are hosted on that IP. Useful for network auditing, cybersecurity investigations, and verifying server identity.

SSL Lookup

Check SSL/TLS certificate details for any domain. View the certificate issuer, subject, validity dates, and days remaining before expiration. Quickly verify whether a site's HTTPS certificate is valid, identify certificate authority (CA), and monitor certificate expiry to prevent downtime. Supports custom ports.

Whois Lookup

Free WHOIS domain lookup tool. Find domain registration information including registrar, creation date, expiration date, and name servers. Check domain ownership, availability, and history. Useful for domain due diligence, investigating spam sources, and monitoring competitor domain registrations.

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Ping

Online ping tool to test network connectivity to any domain or IP address. Measures round-trip time (RTT), packet loss, and average latency without leaving your browser. Useful for checking if a server is online, diagnosing network issues, and measuring response times from our servers. Supports both domain names and IP addresses.

HTTP Headers Lookup

Inspect HTTP response headers for any URL. View server type, caching directives, content-type, security headers (HSTS, CSP, X-Frame-Options), compression settings, and more. Useful for debugging web applications, checking CDN configuration, verifying security headers, and diagnosing 301/302 redirect chains.

Safe URL Checker

Check if a URL is safe before visiting it. Scan links for phishing, malware, suspicious patterns, and known threat indicators. Protect yourself from dangerous websites by verifying URLs from emails, messages, or social media before clicking. Fast, free, and privacy-friendly.

Google Cache Checker

Check if Google has a cached version of any webpage. Instantly generate the Google Cache URL for any website to view how Google last crawled and indexed the page. Useful for SEO audits, checking page indexation status, and viewing content from temporarily unavailable sites.

URL Redirect Checker

Trace the full redirect chain of any URL. Follow all 301, 302, 307, and 308 redirects step by step to see exactly where a link ends up. Useful for diagnosing redirect loops, verifying affiliate links, auditing SEO link equity, and debugging URL shorteners.

Password Strength Checker

Check the strength of any password instantly. Analyze length, character variety, entropy, and resistance to brute-force and dictionary attacks. Get actionable feedback to create stronger passwords. Supports evaluation against common password patterns and provides a strength score from very weak to very strong. Your password is never sent to any server.

Meta Tags Checker

Extract and analyze meta tags from any webpage. View the title tag, meta description, keywords, Open Graph tags (og:title, og:description, og:image), Twitter Card tags, and canonical URLs. Essential for SEO audits, social media preview optimization, and ensuring your pages are properly indexed and shared.

Website Hosting Checker

Find out where any website is hosted. Discover the hosting provider, server IP address, data center location, and ISP for any domain. Useful for competitive research, migration planning, identifying CDN providers, and investigating infrastructure choices.

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File Mime Type Checker

Check the MIME type and content type of any file via URL. Instantly retrieve the Content-Type header, file size, and encoding information. Useful for debugging API responses, verifying file types served by a web server, and ensuring correct media type headers for images, videos, documents, and other assets.

Gravatar Checker

Check if an email address has a Gravatar profile picture. Enter any email to instantly see whether a Gravatar avatar exists and preview the image. Gravatar (Globally Recognized Avatar) is used by WordPress, GitHub, and many other platforms. Useful for profile verification and user lookup.

Palindrome Checker

Check if a word, phrase, or sentence is a palindrome — text that reads the same forwards and backwards. Ignores spaces, punctuation, and capitalization for natural language palindrome detection. Includes well-known examples like 'racecar', 'A man a plan a canal Panama', and 'Never odd or even'.

User Agent Parser

Parse any User-Agent string to identify the browser, operating system, device type, and rendering engine. Decode User-Agent headers from HTTP logs, analytics data, or any source to determine whether the client is Chrome, Firefox, Safari, Edge, or a bot. Supports desktop, mobile, and tablet UA strings.