Find DNS, Email & Security issues in seconds
Check blacklist, email delivery, SSL and performance instantly — no login required.
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Popular Tools
Instant results · < 2 secondsDNS Lookup
Resolve records & detect DNS issues
SSL Certificate Check
Verify SSL validity & expiration
SPF Check
Validate SPF and fix email rejection
IP Blacklist Check
Scan 80+ blocklists instantly
Website Speed Test
Measure load time & performance
WHOIS Lookup
Check domain ownership & expiry
MX Record Lookup
Verify mail server configuration
Email Deliverability Check
Test inbox delivery & reputation
Quick Actions
All 43 Tools
DNS Lookup
Check all DNS records (A, AAAA, MX, NS, TXT, CNAME)
A Record Lookup
Find IPv4 addresses for the domain
MX Record Lookup
Check mail server configuration
NS Record Lookup
Find authoritative name servers
TXT Record Lookup
Check TXT records for SPF, DKIM, verification
CNAME Lookup
Check CNAME alias records
SOA Record Lookup
Check Start of Authority record
DNS Records Dump
Export all DNS records at once
WHOIS Lookup
Domain registration and ownership details
Reverse DNS
Find hostname from IP address
DNSSEC Check
Verify DNSSEC configuration
DS Record Lookup
Check Delegation Signer records
DNSKEY Lookup
Check DNSSEC key records
SPF Generator
Generate SPF records for email authentication
DKIM Generator
Generate DKIM records for email signing
My IP Address
Check your public IPv4 and IPv6 address with geolocation and ISP info
IP Geolocation
Find geographic location of IP
IP Analysis
Comprehensive IP information
Domain to IP Lookup
Resolve domain to IP address
IPv6 Toolkit
Complete IPv6 utilities suite
Port Scanner
Scan open ports on target
Ping & Traceroute
Test connectivity and route path
ASN Lookup
Get ASN and network information
Email Validator
Validate email address deliverability
SPF Check
Validate SPF record configuration
DKIM Validator
Check DKIM record and configuration
DMARC Check
Validate DMARC policy
Email Headers Analyzer
Parse and analyze email headers
SMTP TLS Test
Test mail server TLS configuration
Email Blacklist & RBL Hub
Check IP, domain, and URL blacklist reputation
IP Blacklist Check
Check if an IP is listed on DNSBL/RBL databases
Domain Blacklist Check
Check if a domain is listed on DBL/SURBL databases
URL Blacklist Check
Scan URLs against URI-based reputation lists
Email Migration Tool
Plan email server migrations
Email Deliverability Check
Full email deliverability audit — SPF, DKIM, DMARC, MX, blacklists, PTR, SMTP TLS
Why use WarpCheck?
Professional Infrastructure Diagnostic Tools
WarpCheck provides a comprehensive suite of 43+ free diagnostic tools designed for developers, system administrators, MSPs, and IT infrastructure teams. Whether you need to troubleshoot DNS resolution issues, verify SSL certificate validity, check email deliverability configurations, or test website performance, our tools deliver real-time, authoritative results in seconds.
What Can You Diagnose?
- DNS & Domain — Lookup A, MX, TXT, NS, CNAME, SOA, DNSKEY, and DS records. Validate DNSSEC. Check WHOIS registration data.
- Email & Authentication — Verify SPF, DKIM, and DMARC records. Test SMTP TLS encryption. Check IP and domain blacklists across 80+ RBLs.
- Security — Inspect SSL/TLS certificates, detect WAF protection, test for clickjacking vulnerabilities, and analyze HTTP security headers.
- Performance — Measure TTFB, full page load time, and CDN latency. Monitor uptime and detect outages.
- IP & Network — Geolocate IP addresses, perform ASN lookups, scan ports, run traceroutes, and convert between IPv4/IPv6 formats.
Frequently Asked Questions
What diagnostic tools does WarpCheck offer?
WarpCheck offers 60+ professional tools including DNS lookup, SSL certificate checker, email deliverability tests, IP blacklist checks, WHOIS lookup, website speed tests, and more — all free and instant.
Do I need an account to use these tools?
No. All diagnostic tools are free to use without registration. Create an account only if you want monitoring, alerts, and saved reports.
How fast are the results?
Most tools return results in under 2 seconds. We query authoritative servers directly for real-time accuracy.
Can I run a full diagnostic on my domain?
Yes. Enter your domain in the search box and run a full diagnostic to check DNS, SSL, email authentication, blacklists, and performance in one go.