Domain Checker & Analysis Suite

DNS Lookup

Check all DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) for any domain.

A Record Lookup

Retrieve IPv4 address records configured for a domain name.

AAAA Record Lookup

Check IPv6 address records assigned to a domain.

MX Record Lookup

Inspect Mail Exchange (MX) records and mail server priorities.

TXT Record Lookup

Lookup TXT records including SPF, domain verification, and DKIM entries.

NS Record Lookup

Inspect authoritative Name Server (NS) records for a domain.

SOA Record Lookup

View Start of Authority (SOA) serial number, refresh intervals, and primary nameserver.

PTR Lookup

Perform Reverse DNS PTR lookup on an IP address to resolve hostname.

DNS Record Checker

Audit all essential DNS records and check their validity and configuration.

DNS Propagation Checker

Simulate and check DNS propagation across multiple worldwide DNS servers.

Nameserver Checker

Test whether authoritative nameservers respond accurately and swiftly.

Nameserver Comparison Tool

Compare DNS zones and responses between two different nameservers.

DNS Configuration Analyzer

Detect common DNS misconfigurations, lame delegations, and orphan records.

Missing DNS Record Checker

Highlight missing critical records such as MX, SPF, DMARC, or root A records.

DNS TTL Checker

Evaluate Time To Live (TTL) values across domain DNS records for migration readiness.

DNSSEC Status Checker

Verify if DNS Security Extensions (DNSSEC) are enabled, valid, and signed.

DNSSEC Record Analyzer

Inspect and parse DS, DNSKEY, and RRSIG cryptographic records.

SPF Record Checker

Validate Sender Policy Framework (SPF) syntax and DNS lookup count limit.

SPF Record Parser

Break down SPF record mechanisms (ip4, include, a, mx) into understandable parts.

SPF Record Generator

Generate customized, valid SPF DNS TXT record for email security.

DMARC Record Checker

Check DMARC policy compliance, reporting email addresses, and alignment modes.

DMARC Record Generator

Build an optimized DMARC policy string with rua/ruf report tags.

DKIM Record Checker

Verify DKIM selector TXT record and public key configuration.

MX Configuration Checker

Analyze mail server priorities, reverse DNS, and SMTP connectivity.

Email DNS Health Checker

Complete email deliverability check (MX + SPF + DKIM + DMARC).

Reverse DNS Checker

Verify whether an IP resolves back to the expected domain name.

IP to Hostname Checker

Resolve any IPv4 or IPv6 address to its canonical hostname.

Domain to IP Checker

Resolve a domain name to its direct IPv4 and IPv6 addresses.

Python Online Compiler

Write and run Python code online.

JavaScript Online Compiler

Write and run JavaScript code online.

TypeScript Online Compiler

Write and run TypeScript code online.

Java Online Compiler

Write and run Java code online.

C++ Online Compiler

Write and run C++ code online.

C Online Compiler

Write and run C code online.

C# Online Compiler

Write and run C# code online.

Go Online Compiler

Write and run Go code online.

Rust Online Compiler

Write and run Rust code online.

PHP Online Compiler

Write and run PHP code online.

Kotlin Online Compiler

Write and run Kotlin code online.

Swift Online Compiler

Write and run Swift code online.

Dart Online Compiler

Write and run Dart code online.

Ruby Online Compiler

Write and run Ruby code online.

R Online Compiler

Write and run R code online.

Scala Online Compiler

Write and run Scala code online.

Lua Online Compiler

Write and run Lua code online.

Perl Online Compiler

Write and run Perl code online.

Objective-C Online Compiler

Write and run Objective-C code online.

Fortran Online Compiler

Write and run Fortran code online.

D Online Compiler

Write and run D code online.

Haskell Online Compiler

Write and run Haskell code online.

Julia Online Compiler

Write and run Julia code online.

Pascal Online Compiler

Write and run Pascal code online.

Bash Online Compiler

Write and run Bash code online.

PowerShell Online Compiler

Write and run PowerShell code online.

Assembly Online Compiler

Write and run Assembly code online.

Solidity Online Compiler

Write and compile Solidity code online.

COBOL Online Compiler

Write and run COBOL code online.

Zig Online Compiler

Write and run Zig code online.

Domain HTTP Status Checker

Check response status code (200 OK, 301, 404, 500) and response time.

Bulk Domain Status Checker

Test HTTP status and uptime for multiple websites in bulk.

HTTP to HTTPS Checker

Confirm if unencrypted HTTP traffic automatically redirects to secure HTTPS.

HTTPS Redirect Checker

Verify SSL redirection configuration and 301/302 response codes.

WWW Redirect Checker

Verify if www domain redirects properly to non-www or canonical URL.

Non-WWW Redirect Checker

Verify if non-www domain redirects correctly to www version.

Redirect Chain Checker

Trace multi-hop redirect chains and avoid SEO link equity loss.

Redirect Loop Checker

Detect infinite circular redirection loops (ERR_TOO_MANY_REDIRECTS).

Canonical Domain Checker

Identify the canonical URL configured in headers and HTML rel="canonical".

Domain Response Time Checker

Measure server latency, TTFB (Time to First Byte), and total fetch time.

Website Availability Checker

Instant online/offline server uptime checker.

Domain Ping Tool

Ping domain hostname and measure ICMP / TCP connection socket latency.

Domain Port Checker

Scan open common ports (80, 443, 21, 22, 25, 3306, 8080) on a domain.

HTTP Header Checker

Inspect all HTTP response headers sent by the web server.

Server Header Checker

Identify web server software (Apache, Nginx, Cloudflare, LiteSpeed).

Domain Compression Checker

Check if Gzip, Brotli, or Deflate compression is active on domain responses.

HSTS Checker

Check HTTP Strict Transport Security (HSTS) headers and preload eligibility.

IPv4/IPv6 Support Checker

Check dual-stack network connectivity support (A and AAAA resolution).

SSL Certificate Checker

Inspect SSL/TLS certificate details, encryption cipher, and issue dates.

SSL Expiry Checker

Calculate days remaining until SSL certificate expires and alerts.

SSL Issuer Checker

Identify Certificate Authority (Let's Encrypt, DigiCert, Cloudflare, Sectigo).

SSL Validity Checker

Validate SSL handshake and trust chain integrity.

SSL Hostname Match Checker

Verify if certificate Common Name and SAN match the target domain.

SSL Chain Checker

Inspect intermediate and root CA certificates in the SSL chain.

TLS Version Checker

Check supported TLS versions (TLS 1.2, TLS 1.3) and deprecated protocols.

Certificate SAN Checker

Extract all Subject Alternative Names (SANs) covered by the certificate.

Bulk SSL Expiry Checker

Monitor expiration dates for a list of multiple SSL domains.

Mixed HTTP/HTTPS Domain Checker

Detect mixed content warnings and insecure resource links.

Domain Extractor from Text

Extract all unique domain names and URLs from unformatted raw text.

Domain Extractor from HTML

Parse HTML markup and harvest all external and internal domain links.

Domain Extractor from CSV

Extract and deduplicate domain names from CSV or tab-separated data.

Domain Extractor from Sitemap

Extract domain and subdomains found inside XML sitemap files.

Domain Extractor from URLs

Strip paths, query parameters, and protocol schemes from a list of URLs.

Domain Grouping by TLD

Organize a list of domains grouped neatly by their top-level domain (.com, .org, etc.).

Root Domain Grouping Tool

Consolidate multiple subdomains under their respective parent root domain.

Subdomain Grouper

Categorize subdomains by environment type (api, dev, staging, mail, admin).

Domain List Merger

Combine multiple domain lists into one unified, clean list.

Domain Difference Checker

Find domains present in List A but missing in List B.

Domain Intersection Tool

Find domains that exist simultaneously in both List A and List B.

Domain List Comparison Tool

Side-by-side comparison of two domain lists highlighting additions and removals.

Bulk Domain Validator

Validate syntax, RFC compliance, and character rules for bulk domain lists.

Bulk DNS Analyzer

Analyze DNS health and resolution across hundreds of domains in batch.

Bulk SSL Checker

Scan SSL status and security grades for multiple domains at once.

Bulk Redirect Checker

Batch check redirection targets and status codes for multiple websites.

Bulk Nameserver Checker

Batch lookup nameserver providers for domain portfolios.

Domain Health Checker

Comprehensive audit analyzing DNS, HTTP uptime, SSL, and server health.

Domain DNS Health Checker

Deep DNS diagnostics: root resolution, delegation, TTLs, and authoritative responses.

Domain Migration Checker

Pre/post website migration checklist validator (IP, SSL, DNS TTL, redirects).

Redirect Migration Auditor

Audit 301 redirect mapping between old domain URLs and new domain destinations.

Domain Configuration Auditor

Scan entire web, mail, and security DNS stack for best practices.

Nameserver Migration Checker

Track propagation and synchronization between old and new nameservers.

Domain Email Setup Checker

Full-stack audit for email hosting: MX, SPF, DKIM, DMARC, reverse DNS.

Domain Security Checker

Security posture audit: SSL/TLS grade, HSTS, DNSSEC, security headers.

Technical SEO Domain Checker

Technical SEO audit for canonicals, robots, redirect efficiency, and speed.

Domain Infrastructure Analyzer

Discover hosting provider, CDN, nameserver infrastructure, and IP allocation.

Domain & Subdomain Discovery Tool

Enumerate and discover active subdomains via DNS brute and certificate transparency logs.

Website Hostname Mapper

Map IP addresses and network endpoints tied to a web domain.

Domain Relationship Analyzer

Analyze connections between domains based on shared IP, nameserver, or SSL cert.