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Free Hosting Tools
Hosting Diagnostic Tools
by UnderHost
Free tools to check SSL certificates, diagnose email configuration, troubleshoot WordPress, look up DNS records, request a website migration, and reach our software mirror - all in one place.
100% free to use
No sign-up required
No data stored
Backed by UnderHost support
Available Tools
Pick a tool below to run a free diagnostic check, download trusted utilities, or get hosting support.
SSL Certificate Checker
Free
Check any domain's SSL certificate, expiry date, days remaining, issuer, Subject Alternative Names, key strength, trust chain status, and HTTPS connectivity.
Expiry date
Issuer & CA
SANs
Trust status
Key bits
Chain depth
Check SSL
Email & Domain Diagnostics
Free
Full email configuration check with MX routing, SPF policy, DKIM signing records, DMARC policy, A/AAAA/NS records, and warnings for common misconfigurations.
MX records
SPF
DKIM
DMARC
A / AAAA
Nameservers
Run Diagnostics
WordPress Help & Troubleshooting
KB
Step-by-step guides for common WordPress problems including white screens, 500 errors, database issues, plugin conflicts, security hardening, caching, and slow site troubleshooting.
Errors
Plugins
Security
Performance
Cache
Backups
Browse Articles
Website Migration Request
Free for new customers
Request a website migration to UnderHost. We handle WordPress, cPanel, databases, email accounts, and custom platforms with a zero-downtime approach and 24/7 support.
WordPress
cPanel
Databases
Email
Zero downtime
24-48 hrs
Request Migration
Built for Hosting Customers
These tools are designed for web hosting diagnostics: practical, lightweight, and free.
Instant Results
All checks run server-side using standard DNS and TLS queries with no heavy browser plugins needed.
No Data Stored
We do not log or store the domains you check. Each query is stateless and discarded after the response is sent.
Real Support Behind It
Every tool links back to UnderHost's 24/7 support team when you need hands-on help beyond the diagnostic result.
Need more than a diagnostic?
UnderHost offers shared hosting, VPS, dedicated servers, offshore hosting, and managed services with real technical support.